Merge pull request #196 from Niolak/fix/v4-symfony-deps

Update symfony version in deps

Author: freekmurze

composer.json

@@ -26,9 +26,9 @@
         "ext-libxml": "*",
         "composer-runtime-api": "^2.0",
         "phpunit/phpunit": "^8.3|^9.0",
-        "symfony/property-access": "^4.0|^5.0|^6.0",
-        "symfony/serializer": "^4.0|^5.0|^6.0",
-        "symfony/yaml": "^4.0|^5.0|^6.0"
+        "symfony/property-access": "^4.0|^5.0|^6.0|^7.0",
+        "symfony/serializer": "^4.0|^5.0|^6.0|^7.0",
+        "symfony/yaml": "^4.0|^5.0|^6.0|^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.1.0"