fix: Limit supported Python versions in --about output to existing ones
#4981
Run time
Learn about OS # on GitHub Actions| Job | Run time |
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| 2m 5s | |
| 1m 19s | |
| 53s | |
| 56s | |
| 1m 4s | |
| 1m 35s | |
| 2m 41s | |
| 2m 14s | |
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| 2m 12s | |
| 2m 49s | |
| 2m 22s | |
| 2m 16s | |
| 2m 3s | |
| 2m 1s | |
| 1m 3s | |
| 39s | |
| 57s | |
| 29s | |
| 33m 24s |