chore: run dependabot every week only (instead of live)

.dependabot/config.yml

@@ -3,8 +3,7 @@ version: 1
 update_configs:
     - package_manager: python
       directory: '/'
-      update_schedule: live
+      update_schedule: weekly
       commit_message:
           prefix: "chore"
           include_scope: true
-