Update license used for PRs from forks

Note that originally, this PR attempted to use variables, not secrets,
for the fallback license. The documentation implies that these should be
available, but in fact, they're not. See, for example,
https://github.com/orgs/community/discussions/44322

Given an .ulf file, it can be converted to the format here using:

cat foo.ulf | sed -e 's/"/\\"/g' -e ':a;N;$!ba;s/\n/\\n/g'

On a Mac, use gsed instead of sed

==== OLD COMMIT MESSAGE ====
Get personal license from Github vars

Action v4 requires always passing the username and password. We'll get this from a Github var instead of embedding it

To set these variables, follow the instructions at https://game.ci/docs/github/activation/#personal-license
to set up Unity Hub.

Then, save the following environment variables at
https://github.com/icosa-foundation/open-brush/settings/variables/actions:

FALLBACK_UNITY_EMAIL
FALLBACK_UNITY_PASSWORD
FALLBACK_UNITY_LICENSE

Note that for the license, you need to do two search and replaces first:

1. s/"/\\"/g  # Replace all instances of " with \"
2. s/\r/\\n/g  # Replace all newlines with a string of \n

After this commit, PRs from forks will build successfully using the
FALLBACK_* credentials.

Users who wish to build on their fork, using the "[CI BUILD]" option,
will need to set these environment variables at their
settings/variables/actions link. The ones from Icosa will only be used
when building as part of a PR, not as part of a local commit.
==== END OLD COMMIT MESSAGE ====

==== ORIGINAL CHANGE ====
+  UNITY_EMAIL: ${{ fromJSON(format('["{0}", "{1}"]', vars.FALLBACK_UNITY_EMAIL, secrets.UNITY_EMAIL))[secrets.UNITY_SERIAL != null] }}
+  UNITY_PASSWORD: ${{ fromJSON(format('["{0}", "{1}"]', vars.FALLBACK_UNITY_PASSWORD, secrets.UNITY_PASSWORD))[secrets.UNITY_SERIAL != null] }}
+  UNITY_LICENSE: ${{ fromJSON(format('["{0}", null]', vars.FALLBACK_UNITY_LICENSE))[secrets.UNITY_SERIAL != null] }}
==== END ORIGINAL CHANGE ====

.github/workflows/build.yml

@@ -13,12 +13,10 @@ on:  # yamllint disable-line rule:truthy
 
 env:
   UNITY_VERSION: "2021.3.30f1"
-  UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
-  UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
   UNITY_SERIAL: ${{ secrets.UNITY_SERIAL }}
-  # If UNITY_SERIAL is not set, then use a hardcoded license. Otherwise, don't set this, so the game-ci actions will use EMAIL/PASS/SERIAL
-  UNITY_LICENSE: ${{ fromJSON('["<?xml version=\"1.0\" encoding=\"UTF-8\"?><root>\n    <License id=\"Terms\">\n        <MachineBindings>\n            <Binding Key=\"1\" Value=\"576562626572264761624c65526f7578\"/>\n            <Binding Key=\"2\" Value=\"576562626572264761624c65526f7578\"/>\n        </MachineBindings>\n        <MachineID Value=\"D7nTUnjNAmtsUMcnoyrqkgIbYdM=\"/>\n        <SerialHash Value=\"56bce8b03146a1a47339b2bc8a7a40af276146b9\"/>\n        <Features>\n            <Feature Value=\"33\"/>\n            <Feature Value=\"1\"/>\n            <Feature Value=\"12\"/>\n            <Feature Value=\"2\"/>\n            <Feature Value=\"24\"/>\n            <Feature Value=\"3\"/>\n            <Feature Value=\"36\"/>\n            <Feature Value=\"17\"/>\n            <Feature Value=\"19\"/>\n            <Feature Value=\"62\"/>\n        </Features>\n        <DeveloperData Value=\"AQAAAEY0LURFWjQtVVk1TS04M1lULTNOWVAtNEtXNg==\"/>\n        <SerialMasked Value=\"F4-DEZ4-UY5M-83YT-3NYP-XXXX\"/>\n        <StartDate Value=\"2021-01-27T00:00:00\"/>\n        <UpdateDate Value=\"2021-05-06T05:54:38\"/>\n        <InitialActivationDate Value=\"2021-01-27T07:00:51\"/>\n        <LicenseVersion Value=\"6.x\"/>\n        <ClientProvidedVersion Value=\"2019.4.25f1\"/>\n        <AlwaysOnline Value=\"false\"/>\n        <Entitlements>\n            <Entitlement Ns=\"unity_editor\" Tag=\"UnityPersonal\" Type=\"EDITOR\" ValidTo=\"9999-12-31T00:00:00\"/>\n            <Entitlement Ns=\"unity_editor\" Tag=\"DarkSkin\" Type=\"EDITOR_FEATURE\" ValidTo=\"9999-12-31T00:00:00\"/>\n        </Entitlements>\n    </License>\n<Signature xmlns=\"http://www.w3.org/2000/09/xmldsig#\"><SignedInfo><CanonicalizationMethod Algorithm=\"http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments\"/><SignatureMethod Algorithm=\"http://www.w3.org/2000/09/xmldsig#rsa-sha1\"/><Reference URI=\"#Terms\"><Transforms><Transform Algorithm=\"http://www.w3.org/2000/09/xmldsig#enveloped-signature\"/></Transforms><DigestMethod Algorithm=\"http://www.w3.org/2000/09/xmldsig#sha1\"/><DigestValue>xCBKYap0JQVBqX22jba4k5Da5t0=</DigestValue></Reference></SignedInfo><SignatureValue>n8eYH6Exi6mpw6onE5blxgQY1bAb+NLrsblMlFLUTPVTGw5KmugyVHedyZiI47D3nZVK/FpGaVxJ\n2xcNBr8yR1lfQrakloAZhvlCTiNi/O8N+6aHGZgyi/5+2SLqj0E/ZB+bVlTaSioLy/cF6iOt0d0T\nvW+VEdhht9iWrKKeNBakcXGccX5tQhJFaTR8aYevp0t0TMz3cfGPhs5qDivufqoFl34Y6qa8HjAC\n+OvrlD0TIgMyev+czK0KMIRsT/euOoyOHupXb93BuiMWceRIqf4mYvPKJbhx15Zy3uxHbsF6lV8q\nGah5JCb8iGRTDmG2JzMg6pXCjiznPFNk4Tkl7Q==</SignatureValue></Signature></root>", null]')[secrets.UNITY_SERIAL != null] }}
-
+  UNITY_EMAIL: ${{ fromJSON(format('["[email protected]", "{0}"]', secrets.UNITY_EMAIL))[secrets.UNITY_SERIAL != null] }}
+  UNITY_PASSWORD: ${{ fromJSON(format('["DoNotStealThis1", "{0}"]', secrets.UNITY_PASSWORD))[secrets.UNITY_SERIAL != null] }}
+  UNITY_LICENSE: ${{ fromJSON('["<?xml version=\"1.0\" encoding=\"UTF-8\"?><root><TimeStamp Value=\"chxldhvc0zh5Vw==\"/>\n    <License id=\"Terms\">\n        <MachineBindings>\n            <Binding Key=\"1\" Value=\"C372866C-B44C-5E48-806F-7583B55F04FB\"/>\n            <Binding Key=\"2\" Value=\"C02F32Y5ML85\"/>\n        </MachineBindings>\n        <MachineID Value=\"LcL/yxIaeUG12OSX31mKDtxcVx8=\"/>\n        <SerialHash Value=\"e25c63636985259e763d40cc9253cdfe6a862ceb\"/>\n        <Features>\n            <Feature Value=\"33\"/>\n            <Feature Value=\"1\"/>\n            <Feature Value=\"12\"/>\n            <Feature Value=\"2\"/>\n            <Feature Value=\"24\"/>\n            <Feature Value=\"3\"/>\n            <Feature Value=\"36\"/>\n            <Feature Value=\"17\"/>\n            <Feature Value=\"19\"/>\n            <Feature Value=\"62\"/>\n        </Features>\n        <DeveloperData Value=\"AQAAAEY0LUtFWUItMzYyOC0zWEI3LVBZVVEtTUI5VQ==\"/>\n        <SerialMasked Value=\"F4-KEYB-3628-3XB7-PYUQ-XXXX\"/>\n        <StartDate Value=\"2023-11-21T00:00:00\"/>\n        <UpdateDate Value=\"2023-11-22T06:03:23\"/>\n        <InitialActivationDate Value=\"2023-11-21T06:03:21\"/>\n        <LicenseVersion Value=\"6.x\"/>\n        <ClientProvidedVersion Value=\"2017.2.0\"/>\n        <AlwaysOnline Value=\"false\"/>\n        <Entitlements>\n            <Entitlement Ns=\"unity_editor\" Tag=\"UnityPersonal\" Type=\"EDITOR\" ValidTo=\"9999-12-31T00:00:00\"/>\n            <Entitlement Ns=\"unity_editor\" Tag=\"DarkSkin\" Type=\"EDITOR_FEATURE\" ValidTo=\"9999-12-31T00:00:00\"/>\n        </Entitlements>\n    </License><Signature xmlns=\"http://www.w3.org/2000/09/xmldsig#\"><SignedInfo><CanonicalizationMethod Algorithm=\"http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments\"/><SignatureMethod Algorithm=\"http://www.w3.org/2000/09/xmldsig#rsa-sha1\"/><Reference URI=\"#Terms\"><Transforms><Transform Algorithm=\"http://www.w3.org/2000/09/xmldsig#enveloped-signature\"/></Transforms><DigestMethod Algorithm=\"http://www.w3.org/2000/09/xmldsig#sha1\"/><DigestValue>9DZF11miRAzx7TIuCxih78B6CXU=</DigestValue></Reference></SignedInfo><SignatureValue>weRQubqMNN61lSZtm/e7S+UDzTPNQjM5aQl/c4aKLH/b2khefpgLfdWneoxdnNopA6+rW6kBqxWt\nhMLdHY+oAOfDsfmMQRTnmQG0Y3G3xh6gjGP1RAIHoLDfFHf+0LQ3FakA2WehcFWPSYeVDrdxm3HW\nqMmdKWooD9i+J4s4rQFTDx9+/G6yjc5KGTyGxIz3c5kxTEkV2qsFPXsauomY9Z8YPKy+cZK7g+Ol\npO+LhtzetgTIlIN/qG8eByjlp6nOuVGdDOIrhNJW+vllNyx0qNWPREadVrhFViI4UXegMFRl5gJc\nrgcrlr/fD+NorDVLfcu7D863QXkkuriILUIq2Q==</SignatureValue></Signature></root>", null]')[secrets.UNITY_SERIAL != null] }}
 jobs:
   configuration:
     if: |