Merge pull request ergebnis#613 from ergebnis/dependabot/composer/phpunit/phpunit-9.5.21

composer(deps-dev): bump phpunit/phpunit from 9.5.20 to 9.5.21

Author: ergebnis-bot

composer.json

@@ -23,7 +23,7 @@
     "ergebnis/composer-normalize": "^2.28.0",
     "ergebnis/license": "^1.2.0",
     "fakerphp/faker": "^1.19.0",
-    "phpunit/phpunit": "^9.5.20",
+    "phpunit/phpunit": "^9.5.21",
     "psalm/plugin-phpunit": "~0.17.0",
     "symfony/filesystem": "^4.4.0 || ^5.0.0",
     "vimeo/psalm": "^4.23"