removed ubuntu-20.04 from CI / fixed #13758 - removed support for Python 3.6
#18692
| Job | Run time |
|---|---|
| 8m 10s | |
| 4m 56s | |
| 8m 38s | |
| 8m 40s | |
| 6m 1s | |
| 8m 27s | |
| 4m 13s | |
| 3m 55s | |
| 53m 0s |