Fix bundle lock --update <gem> with --lockfile flag updating all gems
#6965
| Job | Run time |
|---|---|
| 2m 7s | |
| 2m 1s | |
| 2m 2s | |
| 1m 25s | |
| 2m 3s | |
| 1m 10s | |
| 1m 30s | |
| 1m 53s | |
| 1m 11s | |
| 2m 6s | |
| 12s | |
| 2s | |
| 17m 42s |