Apply Black to tests/test_gis.py

Fixes formatting left behind by afbfd95, which was merged while the
Black check on its pull request was still failing.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: simonw

tests/test_gis.py

@@ -6,7 +6,6 @@
 from sqlite_utils.db import Database
 from sqlite_utils.utils import find_spatialite, sqlite3
 
-
 pytestmark = [
     pytest.mark.skipif(
         not find_spatialite(), reason="Could not find SpatiaLite extension"