Make sure update timestamp is set

src/servala/core/models/service.py

@@ -591,6 +591,7 @@ class ServiceInstance(ServalaModelMixin, models.Model):
                 body=patch_body,
             )
             self._clear_kubernetes_caches()
+            self.save()  # Updates updated_at timestamp
         except ApiException as e:
             if e.status == 404:
                 raise ValidationError(