chore: lint source code using Ruff

tests/unit/utils/test_assert_that_is_instance.py

@@ -12,10 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from src.jcloud_docsgen.utils import assert_that_is_instance
-import pytest
 import types
 
+import pytest
+
+from src.jcloud_docsgen.utils import assert_that_is_instance
+
 
 class TestType: ...