message: Move to the TerminalDependencies NuGet feed
  After we stood up our own NuGet feed in Azure blob storage, Azure DevOps
  came out with a public artifact feed feature. I've migrated all our
  packages over, and the only thing left to do is switch our project's
  NuGet config to use it.
  Fixes
diff: <!--<add key="Static Package Dependencies" value="dep\packages" />-->
  <!-- Use our own NuGet Feed -->
  - <add key="Windows Terminal NuGet Feed" value="https://terminalnuget.blob.core.windows.net/feed/index.json" />
  + <add key="TerminalDependencies" value="https://pkgs.dev.azure.com/ms/terminal/_packaging/TerminalDependencies/nuget/v3/index.json" />
  <!-- Internal NuGet feeds that may not be accessible outside Microsoft corporate network -->
  <!--<add key="TAEF - internal" value="https://microsoft.pkgs.visualstudio.com/DefaultCollection/_packaging/Taef/nuget/v3/index.json" />
  