Update Production Relese for NuGet

[mitchelsellers]

netcore.utilities.unittesting/.github/workflows/release-build.yml

Line 42 in 5da6b05

run: nuget push **\*.nupkg -Source 'https://api.nuget.org/v3/index.json' -ApiKey ${{secrets.ICG_NUGET_API_KEY}}

Update the build process to properly push to NuGet with the recent changes to GitHub runners.

The nuget command should be

run: dotnet nuget push **\*.nupkg -s 'https://api.nuget.org/v3/index.json' -k ${{secrets.ICG_NUGET_API_KEY}}