Update dependency tsup to v5.12.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tsup	5.12.3 -> 5.12.4

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Release Notes

egoist/tsup

### [`v5.12.4`](https://togithub.com/egoist/tsup/releases/v5.12.4) [Compare Source](https://togithub.com/egoist/tsup/compare/v5.12.3...v5.12.4) ##### Bug Fixes - make sure `sources` are relative path in sourcemap, closes [#​603](https://togithub.com/egoist/tsup/issues/603) ([637ec28](https://togithub.com/egoist/tsup/commit/637ec281ab2f777ce310442d4434f9cd792efc60)) - reject promise with an error ([401e204](https://togithub.com/egoist/tsup/commit/401e20419baad4f096adef022be726cd1b80ec28))

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