Update tools

Author: hannahchan

Scaffold/dotnet-tools.json

@@ -19,11 +19,11 @@
       "commands": ["dotnet-outdated"]
     },
     "dotnet-reportgenerator-globaltool": {
-      "version": "5.1.11",
+      "version": "5.1.12",
       "commands": ["reportgenerator"]
     },
     "dotnet-stryker": {
-      "version": "3.0.1",
+      "version": "3.1.0",
       "commands": ["dotnet-stryker"]
     },
     "microsoft.dotnet-httprepl": {