fixed implicit nullable parameter, gh actions dependencies

.github/workflows/php.yml

@@ -14,11 +14,11 @@ jobs:
             fail-fast: false
             matrix:
                 operating-system: ['ubuntu-latest']
-                php-versions: ['8.1', '8.0','7.4']
+                php-versions: ['8.4','8.3','8.2','8.1', '8.0','7.4']
 
         services:
             mariadb:
-                image: mariadb:10
+                image: mariadb:lts
                 ports:
                     - 3306:3306
                 env:
@@ -38,7 +38,7 @@ jobs:
                   ini-values: post_max_size=256M, max_execution_time=180
                   coverage: xdebug
 
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
 
 
             - name: Verify MariaDB connection
@@ -52,7 +52,7 @@ jobs:
 
             - name: Cache Composer packages
               id: composer-cache
-              uses: actions/cache@v2
+              uses: actions/cache@v4
               with:
                   path: vendor
                   key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}