Update Ocaramba to .net 6.0

Update Ocaramba to .net 6.0

What's Changed

• Update to dot net core6 by @pawelstryczek in #423

To upgrade existing project created for .Net Core 3.1 at project properties change Target framework to .Net 6.0

New Contributors

• @pawelstryczek made their first contribution in #423

Full Changelog: 4.0.2...4.1.0