workflow test fix

Author: timoladoyinbo

.github/workflows/tests.yml

@@ -20,10 +20,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.4.0
 
       - name: Cache dependencies
-        uses: actions/cache@v2.4.0
+        uses: actions/cache@v1
         with:
           path: ~/.composer/cache/files
           key: dependencies-laravel-${{ matrix.laravel }}-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}