CharmOrigin no longer contains series, so avoid getting it from juju 3.0

Though we should keep it there to continue support 2.9 controllers

Author: cderici

juju/model.py

@@ -1739,7 +1739,8 @@ async def deploy(
             raise JujuError('unknown charm or bundle {}'.format(entity_url))
         identifier = res.identifier
 
-        series = res.origin.series or series
+        series = res.origin.series if self.connection().is_using_old_client \
+            else series
         if res.is_bundle:
             handler = BundleHandler(self, trusted=trust, forced=force)
             await handler.fetch_plan(url, res.origin, overlays=overlays)