[PR #14067/cdb8366e backport][9.0.x] Docs: pin sphinx to <9.0
#8189
| Job | Run time |
|---|---|
| 20s | |
| 1m 36s | |
| 4m 10s | |
| 7m 58s | |
| 3m 40s | |
| 7m 2s | |
| 11m 12s | |
| 7m 34s | |
| 1m 45s | |
| 7m 56s | |
| 1m 0s | |
| 1m 37s | |
| 1m 1s | |
| 1m 58s | |
| 2m 0s | |
| 50s | |
| 8m 37s | |
| 1m 57s | |
| 58s | |
| 2m 14s | |
| 6m 57s | |
| 1m 46s | |
| 8m 3s | |
| 49s | |
| 4m 23s | |
| 1m 0s | |
| 2m 6s | |
| 11m 44s | |
| 4s | |
| 1h 52m 17s |