Disable upgrade checks whilst testing.

web/pgadmin/__init__.py

@@ -237,6 +237,7 @@ def create_app(app_name=None):
     ):
         config.SQLITE_PATH = config.TEST_SQLITE_PATH
         config.MASTER_PASSWORD_REQUIRED = False
+        config.UPGRADE_CHECK_ENABLED = False
 
     # Ensure the various working directories exist
     from pgadmin.setup import create_app_data_directory, db_upgrade