improve: Refresh updated_at field of DataSourceOauthBinding model (#9173)

Signed-off-by: Xiaoguang Sun <sunxiaoguang@gmail.com>

api/libs/oauth_data_source.py

+import datetime
 import urllib.parse
 
 import requests
         if data_source_binding:
             data_source_binding.source_info = source_info
             data_source_binding.disabled = False
+            data_source_binding.updated_at = datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
             db.session.commit()
         else:
             new_data_source_binding = DataSourceOauthBinding(
         if data_source_binding:
             data_source_binding.source_info = source_info
             data_source_binding.disabled = False
+            data_source_binding.updated_at = datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
             db.session.commit()
         else:
             new_data_source_binding = DataSourceOauthBinding(
             }
             data_source_binding.source_info = new_source_info
             data_source_binding.disabled = False
+            data_source_binding.updated_at = datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None)
             db.session.commit()
         else:
             raise ValueError("Data source binding not found")