Convert release-branches.py and update-required-checks.sh to TypeScript
#9505
| Job | Run time |
|---|---|
| 1m 17s | |
| 1m 17s | |
| 1m 44s | |
| 1m 40s | |
| 1m 32s | |
| 1m 10s | |
| 8m 40s |