GH Actions: PHP 8.4 has been released

* Builds against PHP 8.4 are no longer allowed to fail.
* Add _allowed to fail_ build against PHP 8.5.

Ref: https://www.php.net/releases/8.4/en.php

.github/workflows/integrationtest.yml

@@ -39,6 +39,7 @@ jobs:
           - '8.2'
           - '8.3'
           - '8.4'
+          - '8.5'
         composer:
           - 'v1'
           - 'v2'
@@ -63,6 +64,8 @@ jobs:
           # @link https://github.com/composer/composer/issues/10340
           - php: '8.4'
             composer: 'v1'
+          - php: '8.5'
+            composer: 'v1'
 
         include:
           # Composer 2.3 drops support for PHP < 7.2, so for PHP 5.4 to 7.1, `v2` will install
@@ -125,7 +128,7 @@ jobs:
 
     name: "Integration test"
 
-    continue-on-error: ${{ matrix.php == '8.4' || matrix.composer == 'snapshot' }}
+    continue-on-error: ${{ matrix.php == '8.5' || matrix.composer == 'snapshot' }}
 
     steps:
       - name: Checkout code
@@ -145,15 +148,15 @@ jobs:
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
       - name: Install Composer dependencies
-        if: ${{ matrix.php != '8.4' }}
+        if: ${{ matrix.php != '8.5' }}
         uses: "ramsey/composer-install@v3"
         with:
           composer-options: '--optimize-autoloader'
           # Bust the cache at least once a month - output format: YYYY-MM.
           custom-cache-suffix: $(date -u "+%Y-%m")
 
       - name: Install Composer dependencies
-        if: ${{ matrix.php == '8.4' }}
+        if: ${{ matrix.php == '8.5' }}
         uses: "ramsey/composer-install@v3"
         with:
           composer-options: '--ignore-platform-reqs --optimize-autoloader'

tests/PHPCSVersions.php

@@ -363,19 +363,22 @@ function ($version) {
                 break;
 
             case '8.3':
+            case '8.4':
                 $versions = array_filter(
                     self::$allPhpcsVersions,
                     function ($version) {
                         // PHPCS 3.8.0 is the first PHPCS version with runtime support for PHP 8.3.
+                        // And while officially, PHPCS 3.11.0 is the first PHPCS version with runtime support for PHP 8.4,
+                        // for our purposes, we should be fine with PHPCS 3.8.0 or higher.
                         return version_compare($version, '3.8.0', '>=');
                     }
                 );
                 break;
 
-            case '8.4':
+            case '8.5':
                 /*
-                 * At this point in time, it is unclear as of which PHPCS version PHP 8.4 will be supported.
-                 * In other words: tests should only use dev-master/4.x when on PHP 8.4 for the time being.
+                 * At this point in time, it is unclear as of which PHPCS version PHP 8.5 will be supported.
+                 * In other words: tests should only use dev-master/4.x when on PHP 8.5 for the time being.
                  */
                 $versions = array();
                 break;