chore(deps): update dependency tsup to v8 (#321)

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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)) | [`^7.2.0` ->
`^8.0.0`](https://renovatebot.com/diffs/npm/tsup/7.2.0/8.0.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/tsup/8.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/tsup/8.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/tsup/7.2.0/8.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/tsup/7.2.0/8.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

### [`v8.0.0`](https://togithub.com/egoist/tsup/releases/tag/v8.0.0)

[Compare
Source](https://togithub.com/egoist/tsup/compare/v7.3.0...v8.0.0)

##### Bug Fixes

- await postcss for async plugins
([#&#8203;1036](https://togithub.com/egoist/tsup/issues/1036))
([d4e22c5](https://togithub.com/egoist/tsup/commit/d4e22c5fb9e9a31bb3c1449abe0d8f2d86292c9e))

- ci!: drop node 16
([4c1ad38](https://togithub.com/egoist/tsup/commit/4c1ad387eb690c959a318287cc08dfadfe6ca011))

##### Features

- add experimental dts rollup using
[@&#8203;microsoft/api-extractor](https://togithub.com/microsoft/api-extractor)
([#&#8203;983](https://togithub.com/egoist/tsup/issues/983))
([61fc06c](https://togithub.com/egoist/tsup/commit/61fc06c6130391847a370a3efc1c6e7677ba6596))

##### BREAKING CHANGES

-   Drop node < 18

### [`v7.3.0`](https://togithub.com/egoist/tsup/releases/tag/v7.3.0)

[Compare
Source](https://togithub.com/egoist/tsup/compare/v7.2.0...v7.3.0)

##### Bug Fixes

- add newline after cjsInterop
([b749a27](https://togithub.com/egoist/tsup/commit/b749a274be69aab14c64bc926a60c84faef7d173)),
closes [#&#8203;1022](https://togithub.com/egoist/tsup/issues/1022)
- process not found on windows
([#&#8203;1013](https://togithub.com/egoist/tsup/issues/1013))
([690af7b](https://togithub.com/egoist/tsup/commit/690af7b89939c0b4d4e02549c3ed90a1d9c8c50b))

##### Features

- support es3 target
([#&#8203;965](https://togithub.com/egoist/tsup/issues/965))
([1dbd86b](https://togithub.com/egoist/tsup/commit/1dbd86b73481520352bbc9bd24f365f052b3f67e))
- update esbuild to 0.19.2
([#&#8203;987](https://togithub.com/egoist/tsup/issues/987))
([e85437e](https://togithub.com/egoist/tsup/commit/e85437e662345f9be852ed5378d029c92ed43bcd))

</details>

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package.json

@@ -87,7 +87,7 @@
 		"release-it": "^17.0.0",
 		"sentences-per-line": "^0.2.1",
 		"should-semantic-release": "^0.2.1",
-		"tsup": "^7.2.0",
+		"tsup": "^8.0.0",
 		"typedoc": "^0.25.0",
 		"typedoc-plugin-coverage": "^2.0.0",
 		"typedoc-plugin-custom-validation": "^1.1.0",