ci: Add tests for PHP 8.5

Update GitHub Actions to use checkout@v6

Author: Chris53897

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v6
 
             - uses: shivammathur/setup-php@v2
               with:
@@ -38,9 +38,12 @@ jobs:
                     - php: '8.4'
                       coverage: false
                       composer-flags: '--ignore-platform-req=php'
+                    - php: '8.5'
+                      coverage: false
+                      composer-flags: '--ignore-platform-req=php'
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v6
 
             - uses: shivammathur/setup-php@v2
               with:
@@ -53,7 +56,7 @@ jobs:
 
             - name: "Use PHPUnit 9.3+ on PHP 8.0 & PHP 8.1"
               run: composer require --no-update --dev phpunit/phpunit:^9.3
-              if: "matrix.php == '8.0' || matrix.php == '8.1' || matrix.php == '8.2' || matrix.php == '8.3' || matrix.php == '8.4'"
+              if: "matrix.php == '8.0' || matrix.php == '8.1' || matrix.php == '8.2' || matrix.php == '8.3' || matrix.php == '8.4' || matrix.php == '8.5'"
 
             - run: composer update --no-progress ${{ matrix.composer-flags }}
 
@@ -71,7 +74,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v6
 
             - uses: shivammathur/setup-php@v2
               with:
@@ -89,7 +92,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v6
 
             - uses: shivammathur/setup-php@v2
               with: