chore(deps): update dependency tsup to v8.4.0 (#570)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [tsup](https://tsup.egoist.dev/)
([source](https://redirect.github.com/egoist/tsup)) | [`8.3.6` ->
`8.4.0`](https://renovatebot.com/diffs/npm/tsup/8.3.6/8.4.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/tsup/8.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/tsup/8.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/tsup/8.3.6/8.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/tsup/8.3.6/8.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>egoist/tsup (tsup)</summary>

###
[`v8.4.0`](https://redirect.github.com/egoist/tsup/releases/tag/v8.4.0)

[Compare
Source](https://redirect.github.com/egoist/tsup/compare/v8.3.6...v8.4.0)

#####    🚀 Features

- Upgrade svelte and css compiler  -  by
[@&#8203;DaniAcu](https://redirect.github.com/DaniAcu) in
[https://github.com/egoist/tsup/issues/1288](https://redirect.github.com/egoist/tsup/issues/1288)
[<samp>(c3f32)</samp>](https://redirect.github.com/egoist/tsup/commit/c3f320e)

#####    🐞 Bug Fixes

- Upgrade esbuild to 0.25  -  by
[@&#8203;RobinTail](https://redirect.github.com/RobinTail) in
[https://github.com/egoist/tsup/issues/1309](https://redirect.github.com/egoist/tsup/issues/1309)
[<samp>(89c47)</samp>](https://redirect.github.com/egoist/tsup/commit/89c4780)

#####     [View changes on
GitHub](https://redirect.github.com/egoist/tsup/compare/v8.3.6...v8.4.0)

</details>

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