chore(deps): bump vite-task rev and adapt spawn API (#1155)

## Summary

- Bump vite-task git dependency from `2663222` to `26c1892` (includes
[voidzero-dev/vite-task#297](voidzero-dev/vite-task#297))
- Add `tokio-util` dependency and pass `CancellationToken` to
`fspy::Command::spawn()` to adapt to the updated API

Co-authored-by: MK (fengmk2) <fengmk2@gmail.com>

Author: jong-kyung