[CI] brew install grep on MacOS for ggrep (#1894)
#867
| Job | Run time |
|---|---|
| 40m 53s | |
| 32m 47s | |
| 1h 38m 45s | |
| 40m 52s | |
| 32m 29s | |
| 1h 38m 28s | |
| 43m 0s | |
| 35m 38s | |
| 1h 42m 54s | |
| 8h 45m 46s |