Update nightly toolchain for GitHub Actions CI
#5578
| Job | Run time |
|---|---|
| 2m 13s | |
| 26s | |
| 4m 11s | |
| 3m 50s | |
| 1m 54s | |
| 2m 19s | |
| 40s | |
| 2m 36s | |
| 5m 9s | |
| 6m 23s | |
| 3m 58s | |
| 3m 57s | |
| 4m 0s | |
| 9m 26s | |
| 5m 52s | |
| 17s | |
| 1m 49s | |
| 59m 0s |