Remove dependency on Microsoft.DotNet.VersionTools

[mthalman]

The GitHub functionality in Microsoft.DotNet.VersionTools is not being maintained past 9.0. We also run into issues that have required changes to this package for Docker scenarios. It would be best to remove this dependency for these reasons.

This package is being used by ImageBuilder and the update-dependencies tools of dotnet-docker and dotnet-framework-docker.

[lbussell]

Also used in FilePusher:

docker-tools/eng/src/file-pusher/FilePusher.cs

Line 17 in 3e6ff3e

using Microsoft.DotNet.VersionTools.Automation.GitHubApi;

[lbussell]

[Triage] @mthalman will follow up and see if there is a tracking issue for removing this library in dotnet/arcade.

[mthalman]

[Triage] @mthalman will follow up and see if there is a tracking issue for removing this library in dotnet/arcade.

dotnet/arcade#15661