Update actions/cache to v2

Author: STARDEV06

.github/workflows/run-tests.yml

@@ -22,7 +22,7 @@ jobs:
         run: php -r "file_exists('.env') || copy('.env.example', '.env');"
 
       - name: Cache dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v2
         with:
           path: ~/.composer/cache/files
           key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}