fix: remove the dependency of protocmp in google.golang.org/protobuf/testing/protocmp.
#754
| Job | Run time |
|---|---|
| 7m 52s | |
| 7m 52s | |
| 18m 25s | |
| 8m 50s | |
| 9m 7s | |
| 9m 7s | |
| 1h 1m 13s |