We are using semver.
There are several places to update The csproj file has 3. The nuget nuspec file has 1. The project's release.md should have a new entry. The project's changelog should have a new entry. The solution's release.md should have a neew entry.
The nuget nuspec file has en entry that should be updated. The build in github manages publishing to nuget. It might take a while for nuget to index the new package.