Updated symfony/flex flex recipe

Author: tarlepp

.env.dev

@@ -290,15 +290,16 @@
         "version": "v4.4.3"
     },
     "symfony/flex": {
-        "version": "2.2",
+        "version": "2.7",
         "recipe": {
             "repo": "github.com/symfony/recipes",
             "branch": "main",
-            "version": "1.0",
-            "ref": "146251ae39e06a95be0fe3d13c807bcf3938b172"
+            "version": "2.4",
+            "ref": "52e9754527a15e2b79d9a610f98185a1fe46622a"
         },
         "files": [
-            ".env"
+            ".env",
+            ".env.dev"
         ]
     },
     "symfony/form": {