Updated to checkout v2 and added caching of composer dependencies (#252)

Author: Quentin Schmick

.github/workflows/laravel.yml

@@ -6,7 +6,14 @@ jobs:
   laravel-tests:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
+    - name: Cache dependencies
+      uses: actions/cache@v2
+      with:
+        path: ~/.composer/cache/files
+        key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-composer-
     - name: Install Dependencies
       run: composer install -q --no-ansi --no-interaction --no-scripts --no-suggest --no-progress --prefer-dist
     - name: Execute tests (Unit and Feature tests) via PHPUnit