Merge pull request #270 from kubawerlos/dependabot/composer/dev-tools/phpunit/phpunit-9.1.0

Author: dependabot-preview[bot]

dev-tools/composer.json

@@ -12,7 +12,7 @@
  "phpmd/phpmd": "^2.8.2",
  "phpstan/phpstan": "^0.12.18",
  "phpstan/phpstan-strict-rules": "^0.12.2",
- "phpunit/phpunit": "^9.0.2",
+ "phpunit/phpunit": "^9.1.0",
  "squizlabs/php_codesniffer": "^3.5.4",
  "vimeo/psalm": "^3.10.1"
  },