Add Symfony 6 support (#445)

Add Symfony 6 support

Co-authored-by: Christophe Coevoet <[email protected]>

.github/workflows/build.yaml

@@ -66,7 +66,7 @@ jobs:
             - run: |
                   sed -ri 's/"symfony\/(.+)": "(.+)"/"symfony\/\1": "'${{ matrix.symfony }}'"/' composer.json;
               if: matrix.symfony
-            - run: composer config minimum-stability dev && composer config prefer-stable true
+            - run: composer config minimum-stability dev
               if: matrix.dev
             - run: composer update --no-interaction --no-progress --ansi ${{ matrix.composer_option }}
             - run: vendor/bin/phpunit

composer.json

@@ -21,13 +21,13 @@
     "require": {
         "php": "^7.2 || ^8.0",
         "knplabs/knp-menu": "^3.1",
-        "symfony/framework-bundle": "^3.4 | ^4.4 | ^5.0"
+        "symfony/framework-bundle": "^3.4 | ^4.4 | ^5.0 | ^6.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.5 | ^9.5",
-        "symfony/expression-language": "^3.4 | ^4.4 | ^5.0",
-        "symfony/phpunit-bridge": "^5.2",
-        "symfony/templating": "^3.4 | ^4.4 | ^5.0"
+        "symfony/expression-language": "^3.4 | ^4.4 | ^5.0 | ^6.0",
+        "symfony/phpunit-bridge": "^5.2 | ^6.0",
+        "symfony/templating": "^3.4 | ^4.4 | ^5.0 | ^6.0"
     },
     "autoload": {
         "psr-4": { "Knp\\Bundle\\MenuBundle\\": "src" }