Suppress wandb type error (#3397)

nerfstudio/utils/writer.py

@@ -334,7 +334,7 @@ class WandbWriter(Writer):
         """
         import wandb  # wandb is slow to import, so we only import it if we need it.
 
-        wandb.config.update(config_dict, allow_val_change=True)
+        wandb.config.update(config_dict, allow_val_change=True)  # type: ignore
 
 
 @decorate_all([check_main_thread])