Update dependency tsup to v8.1.0 (#3856)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [tsup](https://tsup.egoist.dev/)
([source](https://togithub.com/egoist/tsup)) | [`8.0.2` ->
`8.1.0`](https://renovatebot.com/diffs/npm/tsup/8.0.2/8.1.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/tsup/8.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/tsup/8.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/tsup/8.0.2/8.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/tsup/8.0.2/8.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

### [`v8.1.0`](https://togithub.com/egoist/tsup/releases/tag/v8.1.0)

[Compare
Source](https://togithub.com/egoist/tsup/compare/v8.0.2...v8.1.0)

##### Features

- upgrade esbuild to 0.21.4, opts-in for decorators
([#&#8203;1116](https://togithub.com/egoist/tsup/issues/1116))
([796fc50](https://togithub.com/egoist/tsup/commit/796fc5030f68f929fecde7c94732e9a586ba7508))

</details>

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