Update phpro/grumphp-shim requirement from ^1.5 to ^2.2

Updates the requirements on [phpro/grumphp-shim](https://github.com/phpro/grumphp-shim) to permit the latest version.
- [Release notes](https://github.com/phpro/grumphp-shim/releases)
- [Commits](phpro/grumphp-shim@v1.5.0...v2.2.0)

---
updated-dependencies:
- dependency-name: phpro/grumphp-shim
  dependency-type: direct:development
...

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

composer.json

@@ -31,7 +31,7 @@
         "composer/composer": "^2.2",
         "dealerdirect/phpcodesniffer-composer-installer": "^0.7.2",
         "ergebnis/composer-normalize": "^2.30.2",
-        "phpro/grumphp-shim": "^1.5",
+        "phpro/grumphp-shim": "^2.2",
         "phpunit/phpunit": "^9 || ^10"
     },
     "minimum-stability": "dev",