New release request

[MaceWindu]

Current version of Nullability.Source (2.1.0) triggers error from CA1822 analyzer when enabled:

.nuget\packages\nullability.source\2.1.0\contentFiles\cs\netstandard2.0\Nullability.Source\NullabilityInfoContext.cs(578,22): Error CA1822: Member 'TryPopulateNullabilityInfo' does not access instance data and can be marked as static

I see it was already fixed in source here d91fc09, so no changes to code required

[Simon Cropp]

done