Bump actions/attest-build-provenance from 1 to 2 (#1393)

Bumps [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) from 1 to 2.
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](actions/attest-build-provenance@v1...v2)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: tsteven4 <[email protected]>

.github/workflows/macos.yml

@@ -106,7 +106,7 @@ jobs:
 
     - name: Generate artifact attestation
       if: ${{ inputs.attestation && matrix.RELEASE }}
-      uses: actions/attest-build-provenance@v1
+      uses: actions/attest-build-provenance@v2
       with:
         subject-path: 'gui/GPSBabel-*.dmg'
 

.github/workflows/ubuntu.yml

@@ -118,7 +118,7 @@ jobs:
 
     - name: Generate artifact attestation
       if: ${{ inputs.attestation }}
-      uses: actions/attest-build-provenance@v1
+      uses: actions/attest-build-provenance@v2
       with:
         subject-path: ${{ steps.build-snap.outputs.snap }}
 

.github/workflows/windows.yml

@@ -110,7 +110,7 @@ jobs:
 
     - name: Generate artifact attestation
       if: ${{ inputs.attestation && matrix.RELEASE }}
-      uses: actions/attest-build-provenance@v1
+      uses: actions/attest-build-provenance@v2
       with:
         subject-path: 'bld/gui/GPSBabel-*-Setup.exe'