Update Notification Plugin Lockfile to Rebasing Branch Head (#179)

## Summary
- Update Cargo.lock to resolve tauri-plugin-notification from
ScottMorris/tauri-plugins-workspace branch notification-actions-fix
- Point the lockfile revision at the rebased branch head so Threshold
validates the latest notification plugin fixes

## Notes
- This PR intentionally contains only the lockfile update
- Follow-up updates to the plugin branch will be reflected by refreshing
this lockfile if needed

## Related Upstream PRs
- Plugin implementation: tauri-apps/plugins-workspace#3296
- Companion docs update: tauri-apps/tauri-docs#3743

Author: ScottMorris