composer(deps-dev): bump phpstan/phpstan-phpunit from 1.1.1 to 1.2.2

Bumps [phpstan/phpstan-phpunit](https://github.com/phpstan/phpstan-phpunit) from 1.1.1 to 1.2.2.
- [Release notes](https://github.com/phpstan/phpstan-phpunit/releases)
- [Commits](phpstan/phpstan-phpunit@1.1.1...1.2.2)

---
updated-dependencies:
- dependency-name: phpstan/phpstan-phpunit
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -23,7 +23,7 @@
         "phpstan/extension-installer": "^1.1",
         "phpstan/phpstan": "^1.8",
         "phpstan/phpstan-deprecation-rules": "^1.0",
-        "phpstan/phpstan-phpunit": "^1.1",
+        "phpstan/phpstan-phpunit": "^1.2",
         "phpstan/phpstan-strict-rules": "^1.3",
         "phpunit/phpunit": "^9.5",
         "roave/security-advisories": "dev-latest",