fix(bigquery): add skipIf decorator to type_overrides test classes

Author: enzomaruffa

sdks/python/apache_beam/io/gcp/bigquery_schema_tools_test.py

@@ -337,7 +337,8 @@ def test_geography_with_complex_wkt(self):
     self.assertEqual(usertype.__annotations__, expected_annotations)
 
 
-class TypeOverridesSchemaToolsTest(unittest.TestCase):
+@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
+class TestTypeOverridesSchemaTools(unittest.TestCase):
   """Tests for type_overrides parameter in bigquery_schema_tools."""
   def test_bq_field_to_type_with_overrides(self):
     """Test bq_field_to_type function with type_overrides."""

sdks/python/apache_beam/io/gcp/bigquery_tools_test.py

@@ -1248,6 +1248,7 @@ def test_geography_with_special_characters(self):
     self.assertIsInstance(result, str)
 
 
+@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
 class TestTypeOverrides(unittest.TestCase):
   """Tests for type_overrides parameter in BigQuery type mappings."""
   def test_type_overrides_enables_unsupported_types(self):