.NET 6 was released on November 8 and it is now the latest LTS release.
This includes (at least) updates in these places:
- the Docker build
- GH Actions
- Updating the Gremlin.Net.Template
- the contributing docs
We need to do that on all release branches so contributors only need to have one version of .NET installed on their systems.
We can optionally also improve the codebase by using newer language features as a part of this.
This will also enable us to add support for nullable annotations / checks: