feat: add multiple versions of symfony in the ci

Author: Orann

.github/workflows/ci.yml

@@ -7,12 +7,14 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                version: [ '8.0', '8.1' ]
+                php-version: [ '8.0', '8.1' ]
+                symfony-version: ['^5.4', '^6.0']
             fail-fast: false
         steps:
             - uses: actions/checkout@master
             - uses: shivammathur/setup-php@v2
               with:
-                  php-version: ${{ matrix.version }}
+                  php-version: ${{ matrix.php-version }}
+            - run: composer require symfony/symfony:${{ matrix.symfony-version }} --no-update
             - run: make install
             - run: make ci