chore(deps): update dependency tsdown to v0.21.9 (#947)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Adoption](https://docs.renovatebot.com/merge-confidence/) |
[Passing](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|---|---|
| [tsdown](http://tsdown.dev/)
([source](https://redirect.github.com/rolldown/tsdown)) | [`0.21.8` →
`0.21.9`](https://renovatebot.com/diffs/npm/tsdown/0.21.8/0.21.9) |
![age](https://developer.mend.io/api/mc/badges/age/npm/tsdown/0.21.9?slim=true)
|
![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/tsdown/0.21.9?slim=true)
|
![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/tsdown/0.21.8/0.21.9?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/tsdown/0.21.8/0.21.9?slim=true)
|

---

### Release Notes

<details>
<summary>rolldown/tsdown (tsdown)</summary>

###
[`v0.21.9`](https://redirect.github.com/rolldown/tsdown/releases/tag/v0.21.9)

[Compare
Source](https://redirect.github.com/rolldown/tsdown/compare/v0.21.8...v0.21.9)

#####    🚀 Features

- Upgrade rolldown  -  by
[@&#8203;sxzz](https://redirect.github.com/sxzz)
[<samp>(2d74e)</samp>](https://redirect.github.com/rolldown/tsdown/commit/2d74e05)
- **config**: Track transitive config dependencies for watch reload  - 
by [@&#8203;sxzz](https://redirect.github.com/sxzz) in
[#&#8203;919](https://redirect.github.com/rolldown/tsdown/issues/919)
[<samp>(16e27)</samp>](https://redirect.github.com/rolldown/tsdown/commit/16e2795)
- **exports**: Add bin to publishConfig when devExports is enabled  - 
by [@&#8203;sxzz](https://redirect.github.com/sxzz) in
[#&#8203;911](https://redirect.github.com/rolldown/tsdown/issues/911)
[<samp>(60592)</samp>](https://redirect.github.com/rolldown/tsdown/commit/60592ef)
- **plugin**: Add `tsdownConfig` and `tsdownConfigResolved` plugin hooks
 -  by [@&#8203;sxzz](https://redirect.github.com/sxzz) in
[#&#8203;918](https://redirect.github.com/rolldown/tsdown/issues/918)
[<samp>(665e5)</samp>](https://redirect.github.com/rolldown/tsdown/commit/665e5ac)

#####    🐞 Bug Fixes

- Skip package.json writting when content is deeply equal  -  by
[@&#8203;ocavue](https://redirect.github.com/ocavue) and
[@&#8203;sxzz](https://redirect.github.com/sxzz) in
[#&#8203;913](https://redirect.github.com/rolldown/tsdown/issues/913)
[<samp>(d8e1c)</samp>](https://redirect.github.com/rolldown/tsdown/commit/d8e1c1f)
- Skip Node.js version check in Bun  -  by
[@&#8203;sxzz](https://redirect.github.com/sxzz)
[<samp>(38afd)</samp>](https://redirect.github.com/rolldown/tsdown/commit/38afd8f)
- **css**: Detect css modules from full id for vue virtual sfc styles
 -  by [@&#8203;sxzz](https://redirect.github.com/sxzz) in
[#&#8203;917](https://redirect.github.com/rolldown/tsdown/issues/917)
[<samp>(e6021)</samp>](https://redirect.github.com/rolldown/tsdown/commit/e6021f5)

#####     [View changes on
GitHub](https://redirect.github.com/rolldown/tsdown/compare/v0.21.8...v0.21.9)

</details>

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