message: Update "useGlobalMono" settings description.
diff: "never"
  ],
  "enumDescriptions": [
  - "Automatically launch OmniSharp with \"mono\" if version 6.4.0 or greater is available on the PATH.",
  + "Automatically launch OmniSharp with internal \"mono\", since \"mono\" 6.12.0 does not support .NET Core 3.1.40x or .NET 5 SDKs.",
  "Always launch OmniSharp with \"mono\". If version 6.4.0 or greater is not available on the PATH, an error will be printed.",
  "Never launch OmniSharp on a globally-installed Mono."
  ],
  