Update PHPUnit workflow

.github/workflows/phpunit.yml

@@ -16,40 +16,19 @@ jobs:
                 operating-system: [ubuntu-latest]
                 php-versions: ["8.1", "8.2"]
 
-        name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
-
-        env:
-            PHP_EXTENSIONS: mbstring
-            key: cache-v1
+        name: PHPUnit with PHP ${{ matrix.php-versions }} on ${{ matrix.operating-system }}
 
         steps:
-            - uses: actions/checkout@v3
-
-            - name: Setup Cache environment
-              id: extcache
-              uses: shivammathur/cache-extensions@v1
-              with:
-                  php-version: ${{ matrix.php-versions }}
-                  extensions: ${{ env.PHP_EXTENSIONS }}
-                  key: ${{ env.key }}
-
-            - name: Cache PHP extensions
-              uses: actions/cache@v3
-              with:
-                  path: ${{ steps.extcache.outputs.dir }}
-                  key: ${{ steps.extcache.outputs.key }}
-                  restore-keys: ${{ steps.extcache.outputs.key }}
+            - uses: actions/checkout@v4
 
             - name: Setup PHP
               uses: shivammathur/setup-php@v2
               with:
                   php-version: ${{ matrix.php-versions }}
                   extensions: ${{ env.PHP_EXTENSIONS }}
 
-            ###> Composer ###
             - name: Install Composer packages
               run: composer install -q --no-ansi --no-interaction --no-scripts --no-progress --prefer-dist
-            ###< Composer ###
 
-            - name: Execute tests via PHPUnit
+            - name: Run PHPUnit
               run: $GITHUB_WORKSPACE/vendor/bin/phpunit