Merge pull request #28 from ezsystems/symfony5

EZP-31220: Migrated codebase to Symfony 5

composer.json

@@ -13,7 +13,6 @@
             "homepage": "https://github.com/ezsystems/ezplatform-query-fieldtype/contributors"
         }
     ],
-    "minimum-stability": "dev",
     "require": {
         "php": "^7.3",
         "ext-json": "*",
@@ -22,13 +21,13 @@
         "ezsystems/ezplatform-graphql": "^2.0@dev",
         "ezsystems/ezplatform-rest": "^1.0@dev",
         "ezsystems/ezpublish-kernel": "^8.0@dev",
-        "symfony/dependency-injection": "^4.3",
-        "symfony/expression-language": "^4.3",
-        "symfony/event-dispatcher": "^4.3",
-        "symfony/framework-bundle": "^4.3",
-        "symfony/http-kernel": "^4.3",
-        "symfony/translation": "^4.3",
-        "symfony/yaml": "^4.3"
+        "symfony/dependency-injection": "^5.0",
+        "symfony/expression-language": "^5.0",
+        "symfony/event-dispatcher": "^5.0",
+        "symfony/framework-bundle": "^5.0",
+        "symfony/http-kernel": "^5.0",
+        "symfony/translation": "^5.0",
+        "symfony/yaml": "^5.0"
     },
     "autoload": {
         "psr-4": {