update phpunit workflow template - PHP range from 8.1 to 8.4

Author: michalsn

src/Template/.github/workflows/phpunit.yml

@@ -25,7 +25,7 @@ jobs:
     if: (! contains(github.event.head_commit.message, '[ci skip]'))
     strategy:
       matrix:
-        php-versions: ['7.4', '8.0', '8.1', '8.2']
+        php-versions: ['8.1', '8.2', '8.3', '8.4']
 
     steps:
       - name: Checkout
@@ -53,10 +53,15 @@ jobs:
 
       - name: Install dependencies
         run: |
+          OPTIONS="${{ env.COMPOSER_UPDATE_FLAGS }} --no-progress --no-interaction --prefer-dist --optimize-autoloader"
+          if [[ '${{ matrix.php-versions }}' == '8.4' ]]; then
+            OPTIONS="$OPTIONS --ignore-platform-reqs"
+          fi
+
           if [ -f composer.lock ]; then
-            composer install --no-progress --no-interaction --prefer-dist --optimize-autoloader
+            composer install $OPTIONS
           else
-            composer update --no-progress --no-interaction --prefer-dist --optimize-autoloader
+            composer update $OPTIONS
           fi
 
       - name: Test with PHPUnit