Update the CI setup

- Update actions to their latest version
- Add a job for PHP 8.3
- Use PHP 8.2 to run the dev deps as latest versions of our dependencies
  are not compatible with 7.4 or 8.0

.github/workflows/tests.yml

@@ -9,11 +9,22 @@ defaults:
     shell: bash
 
 jobs:
+  check_composer:
+    name: Check composer.json
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: shivammathur/setup-php@v2
+        with:
+          coverage: none
+          php-version: '8.2'
+      - run: composer validate --strict --no-check-lock
+
   static_analysis:
     name: Static analysis
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
         with:
           coverage: none
@@ -24,27 +35,25 @@ jobs:
 
   tests:
     name: Tests
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
+        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
         composer_flags: [ '' ]
         minimum_stability: [ '' ]
         symfony_deprecations_helper: [ '' ]
         include:
           - php: '7.2'
             composer_flags: '--prefer-lowest --prefer-stable'
             symfony_deprecations_helper: weak
-          - php: '8.0'
-            minimum_stability: dev
-          - php: '7.4'
+          - php: '8.2'
             minimum_stability: dev
       fail-fast: false
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 1
 
@@ -57,17 +66,15 @@ jobs:
 
       - name: Configure for minimum stability
         if: "${{ matrix.minimum_stability == 'dev' }}"
-        run: |
-          composer config minimum-stability dev
+        run: composer config minimum-stability dev
 
       - name: Install dependencies
-        run: |
-          composer update ${{ matrix.composer_flags }}
+        run: composer update ${{ matrix.composer_flags }}
 
       - name: Run tests
-        run: |
-          export SYMFONY_DEPRECATIONS_HELPER="${{ matrix.symfony_deprecations_helper }}"
-          vendor/bin/phpunit -v --coverage-clover=coverage.xml
+        env:
+          SYMFONY_DEPRECATIONS_HELPER: "${{ matrix.symfony_deprecations_helper }}"
+        run: vendor/bin/phpunit -v --coverage-clover=coverage.xml
 
       - name: Upload coverage
         uses: codecov/codecov-action@v3