Merge pull request #673 from Ocramius/dependabot/composer/infection/infection-0.21.4

Author: dependabot-preview[bot]

composer.json

@@ -38,7 +38,7 @@
         "doctrine/coding-standard":     "^8.1.0",
         "nikic/php-parser":             "^4.6.0",
         "phpbench/phpbench":            "^0.17.1 || 1.0.0-alpha2",
-        "infection/infection":          "^0.21.2",
+        "infection/infection":          "^0.21.4",
         "vimeo/psalm":                  "^4.4.1",
         "codelicia/xulieta":            "^0.1.6"
     },