gh-152168: Don't skip test_bigmem if _testcapi is missing
#270535
| Job | Run time |
|---|---|
| 5s | |
| 5s | |
| 10s |
test_bigmem if _testcapi is missing
#270535
| Job | Run time |
|---|---|
| 5s | |
| 5s | |
| 10s |