Speed up _notify_conda_outdated due to expensive PrefixData call.
#842
| Job | Run time |
|---|---|
| 34m 47s | |
| 31m 19s | |
| 35m 6s | |
| 34m 29s | |
| 27m 40s | |
| 33m 39s | |
| 31m 51s | |
| 50m 15s | |
| 23m 5s | |
| 7s | |
| 5s | |
| 0s | |
| 5h 2m 23s |