Update dotnet-stryker to version 4.12.0

Author: 0xced

.config/dotnet-tools.json

@@ -10,7 +10,7 @@
       "rollForward": true
     },
     "dotnet-stryker": {
-      "version": "4.11.0",
+      "version": "4.12.0",
       "commands": [
         "dotnet-stryker"
       ],