Investigate bad NuGet update for transitive dependency.

[brettfo]

From an internal repo:

• A project has a <PackageReference> to Testcontainers/3.6.0. This pulls in a transitive dependency on System.Text.Json.
• An update job was run to update System.Text.Json to 6.0.10, but it did some incorrect updates, namely:
  • It added <PackageReference Include="System.Text.Json" /> to pin the transitive dependency in the .csproj, but failed to add the corresponding <PackageVersion> element in Directory.Packages.props resulting in a build error because no package version was specified for System.Text.Json.
  • It updated the <PackageVersion> element for Testcontainers from 3.6.0 to 3.8.0. This update does update the version of System.Text.Json, but not all the way to the desired 6.0.10 version.