Update dependency svelte-preprocess to v5.1.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
svelte-preprocess	5.1.3 -> 5.1.4

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Release Notes

sveltejs/svelte-preprocess (svelte-preprocess)

### [`v5.1.4`](https://togithub.com/sveltejs/svelte-preprocess/blob/HEAD/CHANGELOG.md#514-2024-04-16) [Compare Source](https://togithub.com/sveltejs/svelte-preprocess/compare/v5.1.3...v5.1.4) ##### Bug Fixes - remove pnpm version restriction ([#​629](https://togithub.com/sveltejs/svelte-preprocess/issues/629)) ([2713b82](https://togithub.com/sveltejs/svelte-preprocess/commit/2713b82d80cd6d40c1c12cebe31c4d25882bec13))

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