chore(deps): update dependency tsup to v8 (#204)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [tsup](https://tsup.egoist.dev/)
([source](https://togithub.com/egoist/tsup)) | devDependencies | major |
[`7.3.0` -> `8.0.0`](https://renovatebot.com/diffs/npm/tsup/7.3.0/8.0.0)
|

---

### 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

</details>

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package.json

@@ -81,7 +81,7 @@
     "semantic-release-major-tag": "0.3.2",
     "simple-git": "3.20.0",
     "ts-node": "10.9.1",
-    "tsup": "7.3.0",
+    "tsup": "8.0.0",
     "typescript": "5.2.2"
   }
 }