[8.x] PHP 8.1 builds (#36700)

* Ignore platform reqs

* Prefer stable

* Re-enable tests

* Skip PHP 8.1 build failures

* Update tests.yml

Author: driesvints

.github/workflows/tests.yml

@@ -33,6 +33,11 @@ jobs:
       matrix:
         php: ['7.3', '7.4', '8.0']
         stability: [prefer-lowest, prefer-stable]
+        include:
+          - php: '8.1'
+            flags: "--ignore-platform-req=php"
+            stability: prefer-stable
+
 
     name: PHP ${{ matrix.php }} - ${{ matrix.stability }}
 
@@ -61,9 +66,10 @@ jobs:
         with:
           timeout_minutes: 5
           max_attempts: 5
-          command: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress
+          command: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress ${{ matrix.flags }}
 
       - name: Execute tests
+        continue-on-error: ${{ matrix.php > 8 }}
         run: vendor/bin/phpunit --verbose
         env:
           DB_PORT: ${{ job.services.mysql.ports[3306] }}
@@ -77,6 +83,10 @@ jobs:
       matrix:
         php: ['7.3', '7.4', '8.0']
         stability: [prefer-lowest, prefer-stable]
+        include:
+          - php: '8.1'
+            flags: "--ignore-platform-req=php"
+            stability: prefer-stable
 
     name: PHP ${{ matrix.php }} - ${{ matrix.stability }} - Windows
 
@@ -110,7 +120,8 @@ jobs:
         with:
           timeout_minutes: 5
           max_attempts: 5
-          command: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress
+          command: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress ${{ matrix.flags }}
 
       - name: Execute tests
+        continue-on-error: ${{ matrix.php > 8 }}
         run: vendor/bin/phpunit --verbose