XX-4108 / Update Protoc
Update compiled proto files to new protoc-gen-go repository; protoc: v3.15.6, protoc-gen-go: v1.27.1, protoc-gen-go-grpc: v1.2.0
Edited by Jono Wenger
Update compiled proto files to new protoc-gen-go repository; protoc: v3.15.6, protoc-gen-go: v1.27.1, protoc-gen-go-grpc: v1.2.0