Convert release-branches.py and update-required-checks.sh to TypeScript
#9501
| Job | Run time |
|---|---|
| 1m 9s | |
| 1m 45s | |
| 1m 11s | |
| 1m 19s | |
| 1m 33s | |
| 1m 12s | |
| 8m 9s |