Bump the phpstan group with 1 update

Updates the requirements on [shipmonk/phpstan-rules](https://github.com/shipmonk-rnd/phpstan-rules) to permit the latest version.
- [Release notes](https://github.com/shipmonk-rnd/phpstan-rules/releases)
- [Commits](shipmonk-rnd/phpstan-rules@2.6.3...2.7.0)

---
updated-dependencies:
- dependency-name: shipmonk/phpstan-rules
  dependency-type: direct:development
  dependency-group: phpstan
...

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

composer.json

@@ -27,7 +27,7 @@
         "phpstan/phpstan-nette": "1.2.9",
         "nepada/phpstan-nette-tester": "1.0.0",
         "spaze/phpstan-disallowed-calls": "2.16.0",
-        "shipmonk/phpstan-rules": "2.6.3",
+        "shipmonk/phpstan-rules": "2.7.0",
         "php-parallel-lint/php-parallel-lint": "1.3.2",
         "nepada/coding-standard": "7.11.0"
     },