chore(deps): update dependency drupol/php-conventions to v6 (#346)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -43,7 +43,7 @@
         "ext-pcov": "*",
         "amphp/parallel-functions": "^1",
         "doctrine/collections": "^2",
-        "drupol/php-conventions": "^5",
+        "drupol/php-conventions": "^6",
         "infection/infection": "^0.27 || ^0.28 || ^0.29",
         "loophp/phpunit-iterable-assertions": "^1.0",
         "phpstan/phpstan-strict-rules": "^1.0",