Google.Protobuf NuGet package is not deterministic

What version of protobuf and what language are you using? Version: v3.33.0 Language: C#

What operating system (Linux, Windows, ...) and version?

N/A

What runtime / compiler are you using (e.g., python version or gcc version)

N/A

What did you do?

1. View the NuGet package in nuget.info
2. Observe the Health section of the package

What did you expect to see

All sources in the NuGet package are tracked, so things look like this:

What did you see instead?

Anything else we should know about your project / environment

N/A