Release stable 3.3.4 for Microsoft.CodeAnalysis.Analyzers

[Youssef1313]

3.3.3 is quite old, and there was quite good improvements made since 3.3.3 release:

#6119
#6115
#6047
#5810
#5807

After release, the version should be updated in dotnet/roslyn. Some roslyn packages have non-private dependency on the analyzer package, and the package flows transitively to users' projects, so good to update it.

[Youssef1313]

@mavasani @jmarolf @arkalyanms

[Youssef1313]

The work is now done. Closing this.