Bump dotnet-reportgenerator-globaltool from 5.4.5 to 5.4.12 (#103)

Author: dependabot[bot]

.config/dotnet-tools.json

@@ -17,7 +17,7 @@
       "rollForward": false
     },
     "dotnet-reportgenerator-globaltool": {
-      "version": "5.4.5",
+      "version": "5.4.12",
       "commands": [
         "reportgenerator"
       ],