test: comment out caching

.github/workflows/php.yml

@@ -14,20 +14,17 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Update composer.lock
-      run: composer update -W
-
     - name: Validate composer.json and composer.lock
       run: composer validate --strict
 
-    - name: Cache Composer packages
-      id: composer-cache
-      uses: actions/cache@v2
-      with:
-        path: vendor
-        key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-php-
+      #    - name: Cache Composer packages
+      #id: composer-cache
+      #uses: actions/cache@v2
+      #with:
+      #  path: vendor
+      #  key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+      #  restore-keys: |
+      #    ${{ runner.os }}-php-
 
     - name: Install dependencies
       run: composer install --prefer-dist --no-progress