Merge pull request #56 from simPod/dependabot/composer/phpstan/phpstan-strict-rules-0.12.4

Update phpstan/phpstan-strict-rules requirement from 0.12.2 to 0.12.4

Author: simPod

composer.json

@@ -22,7 +22,7 @@
         "phpstan/extension-installer": "^1.0",
         "phpstan/phpstan": "0.12.38",
         "phpstan/phpstan-phpunit": "0.12.10",
-        "phpstan/phpstan-strict-rules": "0.12.2",
+        "phpstan/phpstan-strict-rules": "0.12.4",
         "phpunit/phpunit": "^9.0",
         "simpod/php-coveralls-mirror": "^3.0",
         "thecodingmachine/phpstan-safe-rule": "^1.0"