Benjamin Drung c8fe724560 Fix pylint in ubuntutools/test/test_requestsync.py
pylint complains:

```
ubuntutools/test/test_requestsync.py:31:12: C0415: Import outside toplevel (keyring) (import-outside-toplevel)
ubuntutools/test/test_requestsync.py:33:12: W0707: Consider explicitly re-raising using 'except ModuleNotFoundError as exc' and 'raise ModuleNotFoundError('package python3-keyring is not installed') from exc' (raise-missing-from)
ubuntutools/test/test_requestsync.py:31:12: W0611: Unused import keyring (unused-import)
```
2025-12-03 13:51:50 +01:00
..
2023-01-31 19:32:58 +01:00