bump version 2.12.0-beta1-build5020

[TimothyMothra]

this is needed to test connection strings

[TimothyMothra]

Build FAILED.

E:\A_work_tool\dotnet\sdk\3.0.100\NuGet.targets(123,5): error : An error occurred while retrieving package metadata for 'Newtonsoft.Json.11.0.2' from source 'E:\A_work_tool\dotnet\sdk\NuGetFallbackFolder'. [E:\A_work\2\s\src\Microsoft.ApplicationInsights.AspNetCore\Microsoft.ApplicationInsights.AspNetCore.csproj]
E:\A_work_tool\dotnet\sdk\3.0.100\NuGet.targets(123,5): error : The package is missing the required nuspec file. Path: E:\A_work_tool\dotnet\sdk\NuGetFallbackFolder\newtonsoft.json\11.0.2 [E:\A_work\2\s\src\Microsoft.ApplicationInsights.AspNetCore\Microsoft.ApplicationInsights.AspNetCore.csproj]
0 Warning(s)
1 Error(s)

[TimothyMothra]

Build FAILED.

C:\Users\dlab14.nuget\packages\bond.csharp\7.0.0\build\Common.targets(112,5): error MSB3491: Could not write lines to file "E:\A_work\2\s\test\ApplicationInsightsTypes\Generated\bondcodegen.done". The process cannot access the file 'E:\A_work\2\s\test\ApplicationInsightsTypes\Generated\bondcodegen.done' because it is being used by another process. [E:\A_work\2\s\test\ApplicationInsightsTypes\ApplicationInsightsTypes.csproj]
0 Warning(s)
1 Error(s)