Unpin nbconvert since the issue with mistune is resolved
#469
| Job | Run time |
|---|---|
| 13s | |
| 1m 19s | |
| 13s | |
| 5m 38s | |
| 41s | |
| 5m 44s | |
| 9m 26s | |
| 32s | |
| 5m 55s | |
| 40s | |
| 5m 47s | |
| 35s | |
| 14m 11s | |
| 1m 31s | |
| 5m 45s | |
| 9m 49s | |
| 1h 7m 59s |