Merge pull request #141 from lcobucci/dependabot/composer/infection/infection-0.21.0

Author: dependabot-preview[bot]

composer.json

@@ -20,7 +20,7 @@
         "psr/log": "^1.1"
     },
     "require-dev": {
-        "infection/infection": "^0.20",
+        "infection/infection": "^0.21",
         "laminas/laminas-diactoros": "^2.5",
         "lcobucci/coding-standard": "^6.0",
         "phpstan/extension-installer": "^1.1",