- Update assets/client.go to use grpc.NewClient
- Update swap_server_client.go to use grpc.NewClient
- Replace grpc.WithInsecure() with insecure.NewCredentials()
This is needed to update protobuf. Version 1.33 breaks in Go 1.16 with
the following error: "//go:build comment without // +build comment".
Distribution was updated from buster (10) to bookworm (12).
protoc was updated from v3.6.1 to v3.21.12.