Upgrade actions

Author: patrikjuvonen

.github/workflows/php.yml

@@ -14,8 +14,8 @@ jobs:
         php-versions: ['7.4', '8.0']
     name: Build PHP version ${{ matrix.php-versions }}
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/cache@v2
+    - uses: actions/checkout@v3
+    - uses: actions/cache@v3
       with:
         path: vendor
         key: ${{ runner.os }}-${{ hashFiles('**/composer.lock') }}