Update veewee/xml requirement from ^2.2 to ^2.2 || ^3.0

Updates the requirements on [veewee/xml](https://github.com/veewee/xml) to permit the latest version.
- [Release notes](https://github.com/veewee/xml/releases)
- [Commits](veewee/xml@2.2.0...3.1.0)

---
updated-dependencies:
- dependency-name: veewee/xml
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -30,7 +30,7 @@
         "psr/http-factory-implementation": "^1.0",
         "psr/http-message-implementation": "^1.0",
         "psr/http-message": "^1.0.1|^2.0",
-        "veewee/xml": "^2.2",
+        "veewee/xml": "^2.2 || ^3.0",
         "php-http/client-common": "^2.3"
     },
     "require-dev": {