Fix sql_to_gcs hook gzip of schema_file (#9140)

Author: nullhack

airflow/providers/google/cloud/operators/sql_to_gcs.py

@@ -292,4 +292,4 @@ def _upload_to_gcs(self, files_to_upload):
             hook.upload(self.bucket, tmp_file.get('file_name'),
                         tmp_file.get('file_handle').name,
                         mime_type=tmp_file.get('file_mime_type'),
-                        gzip=self.gzip if tmp_file.get('file_name') == self.schema_filename else False)
+                        gzip=self.gzip if tmp_file.get('file_name') != self.schema_filename else False)