Update Newtonsoft.Json to 13.0.4

[mthalman]

Updates the Newtonsoft.Json external package from 13.0.3 to 13.0.4.

Changes:

• Updated submodule to 13.0.4 tag
• Updated version in Versions.props
• Regenerated patch for 13.0.4 csproj
• Updated SourceRevisionId and FileVersionRevision in project file

Related to dotnet/dotnet#5791 (comment)

[ellahathaway]

Is it okay to make this change before dotnet/dotnet#5791 is merged? Would doing so result in a 13.0.3 prebuilt until the Arcade flow change lands? If so, should we roll this into dotnet/dotnet#5791 instead?

[mthalman]

Is it okay to make this change before dotnet/dotnet#5791 is merged? Would doing so result in a 13.0.3 prebuilt until the Arcade flow change lands? If so, should we roll this into dotnet/dotnet#5791 instead?

Yes, it'll cause a prebuilt. I'll need to roll the two code flows together. I need to make the change here first because it's changing a submodule. You can't make such a change directly in the VMR because the VMR has the raw sources files, not the submodule link, so backflow wouldn't work.