Update dependency magic-string to v0.30.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
magic-string	0.30.3 -> 0.30.4

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Release Notes

rich-harris/magic-string (magic-string)

### [`v0.30.4`](https://togithub.com/rich-harris/magic-string/blob/HEAD/CHANGELOG.md#0304-2023-09-29) [Compare Source](https://togithub.com/rich-harris/magic-string/compare/v0.30.3...v0.30.4) ##### Bug Fixes - correct mappings for update containing new line ([#​261](https://togithub.com/rich-harris/magic-string/issues/261)) ([adaece9](https://togithub.com/rich-harris/magic-string/commit/adaece9f2370fd1266e89f2fc84c294e1f1b935c)) - use global `btoa`, support services worker, close [#​258](https://togithub.com/rich-harris/magic-string/issues/258) ([#​259](https://togithub.com/rich-harris/magic-string/issues/259)) ([2dea20b](https://togithub.com/rich-harris/magic-string/commit/2dea20bab7ca0f776013826074d474f476d281bc))

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