🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

tests/system/small/bigquery/test_sql.py

@@ -12,9 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import pytest
 import pandas as pd
 import pyarrow as pa
+import pytest
 
 import bigframes.bigquery as bbq
 import bigframes.dtypes as dtypes