Upgrade GitHub Actions configurations

Updated checkout action to v3 and PHP version to 8.3 across CI workflows. Simplified composer validation command in coding standards workflow by removing redundant composer update step. These changes ensure compatibility with the latest tools and improve workflow efficiency.

.github/workflows/coding-standards.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.1
+          php-version: 8.3
           tools: cs2pr
           coverage: none
 
@@ -35,9 +35,7 @@ jobs:
         run: composer install --no-interaction --no-progress --prefer-dist
 
       - name: Validate composer.json
-        run |
-          composer update
-          composer validate --strict
+        run: composer validate --strict
 
       - name: Run PHP_CodeSniffer
         run: ./vendor/bin/phpcs -q --no-colors --report=checkstyle src tests | cs2pr

.github/workflows/continuous-integration.yml

@@ -12,12 +12,12 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.1'
+          php-version: 8.3
           coverage: pcov
           ini-values: zend.assertions=1
 

.github/workflows/static-analysis.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.1
+          php-version: 8.3
           tools: cs2pr
           coverage: none