Update actions/checkout and use powerpc64-unknown-linux-gnu for BE CI tests
#460
| Job | Run time |
|---|---|
| 3m 58s | |
| 3m 58s | |
| 4m 10s | |
| 4m 10s | |
| 3m 48s | |
| 3m 48s | |
| 3m 3s | |
| 3m 3s | |
| 2m 3s | |
| 2m 3s | |
| 2m 37s | |
| 2m 37s | |
| 6m 12s | |
| 6m 12s | |
| 9m 20s | |
| 9m 20s | |
| 9m 43s | |
| 10m 0s | |
| 6m 1s | |
| 6m 1s | |
| 8m 48s | |
| 8m 48s | |
| 10m 39s | |
| 11m 2s | |
| 7m 7s | |
| 7m 7s | |
| 7m 43s | |
| 7m 43s | |
| 10m 38s | |
| 9m 39s | |
| 7m 38s | |
| 7m 38s | |
| 9m 8s | |
| 9m 8s | |
| 7m 55s | |
| 7m 55s | |
| 33s | |
| 33s | |
| 2m 2s | |
| 2m 2s | |
| 28s | |
| 28s | |
| 4h 6m 49s |