Bump symfony/* deps to ^5.4|^6.0

Author: nicolas-grekas

composer.json

@@ -20,19 +20,19 @@
         "symfony/deprecation-contracts": "^2.1"
     },
     "require-dev": {
-        "symfony/config": "^5.3|^6.0",
-        "symfony/http-foundation": "^4.4|^5.0|^6.0",
-        "symfony/yaml": "^4.4|^5.0|^6.0",
-        "symfony/expression-language": "^4.4|^5.0|^6.0",
-        "symfony/dependency-injection": "^4.4|^5.0|^6.0",
+        "symfony/config": "^5.4|^6.0",
+        "symfony/http-foundation": "^5.4|^6.0",
+        "symfony/yaml": "^5.4|^6.0",
+        "symfony/expression-language": "^5.4|^6.0",
+        "symfony/dependency-injection": "^5.4|^6.0",
         "doctrine/annotations": "^1.12",
         "psr/log": "~1.0"
     },
     "conflict": {
         "doctrine/annotations": "<1.12",
-        "symfony/config": "<5.3",
-        "symfony/dependency-injection": "<4.4",
-        "symfony/yaml": "<4.4"
+        "symfony/config": "<5.4",
+        "symfony/dependency-injection": "<5.4",
+        "symfony/yaml": "<5.4"
     },
     "suggest": {
         "symfony/http-foundation": "For using a Symfony Request object",