Removed guff

.github/workflows/continuous-integration.yml

@@ -95,17 +95,7 @@ jobs:
           extensions: "intl, zip"
           ini-values: "memory_limit=-1, phar.readonly=0"
           php-version: "${{ matrix.php-version }}"
-
-      - name: "Determine composer cache directory"
-        id: "determine-composer-cache-directory"
-        run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
-
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v2"
-        with:
-          path: "${{ steps.determine-composer-cache-directory.outputs.directory }}"
-          key: "php-${{ matrix.php-version }}-symfony-php-unit-version-${{ env.SYMFONY_PHPUNIT_VERSION }}-${{ hashFiles('**/composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-symfony-php-unit-version-${{ env.SYMFONY_PHPUNIT_VERSION }}"
+          tools: composer:v2
 
       - name: "Handle lowest dependencies update"
         if: "contains(matrix.dependencies, 'lowest')"