github: Don't use `make` in testing.yaml (#4059)
github: Don't use `make` in testing.yaml (#4059)


grpc/grpc-go,grpc/grpc-go,dfawley/grpc-go,stanley-cheung/grpc-go,dfawley/grpc-go,stanley-cheung/grpc-go,menghanl/grpc-go,menghanl/grpc-go