Update symplify/easy-coding-standard requirement from ^11.0 to ^12.0

Updates the requirements on [symplify/easy-coding-standard](https://github.com/easy-coding-standard/easy-coding-standard) to permit the latest version.
- [Release notes](https://github.com/easy-coding-standard/easy-coding-standard/releases)
- [Commits](easy-coding-standard/easy-coding-standard@11.0.1...12.0.6)

---
updated-dependencies:
- dependency-name: symplify/easy-coding-standard
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -44,7 +44,7 @@
         "symfony/dependency-injection": "^5.0 || ^6.0",
         "symfony/filesystem": "^5.0 || ^6.0",
         "symfony/http-kernel": "^5.0 || ^6.0",
-        "symplify/easy-coding-standard": "^11.0"
+        "symplify/easy-coding-standard": "^12.0"
     },
     "autoload": {
         "psr-4": {