test(sqlite): fix test flakiness caused by failing to close sqlite3.Connection objects
#25951
| Job | Run time |
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| 4m 4s | |
| 33s | |
| 2m 55s | |
| 3m 35s | |
| 3m 9s | |
| 5m 2s | |
| 4m 53s | |
| 4m 58s | |
| 4m 3s | |
| 6m 14s | |
| 5m 48s | |
| 6m 42s | |
| 5m 10s | |
| 5m 50s | |
| 5m 11s | |
| 6m 34s | |
| 7m 8s | |
| 1h 24m 0s |