bump to v5.11

Upgrade protobuf-net / gRPC deps

bump to v5.10.2

GitHub token now needs to be in Authorization header

Also call ValidateToken if exists in GetVerifiedJwtPayload

Upgrade to protobuf-net gRPC

bump to v5.8

bump deps to v5.7

Upgrade all projects to v5.6.0

remove .NET Framework which has dep on OrmLite