Update dependency svelte-check to v3.8.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
svelte-check	3.8.1 -> 3.8.4

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Release Notes

sveltejs/language-tools (svelte-check)

### [`v3.8.4`](https://togithub.com/sveltejs/language-tools/releases/tag/svelte-check-3.8.4) [Compare Source](https://togithub.com/sveltejs/language-tools/compare/svelte-check-3.8.3...svelte-check-3.8.4) - fix: ensure bindings and exports work properly for Svelte 5 + TS5.5 ### [`v3.8.3`](https://togithub.com/sveltejs/language-tools/releases/tag/svelte-check-3.8.3) [Compare Source](https://togithub.com/sveltejs/language-tools/compare/svelte-check-3.8.2...svelte-check-3.8.3) - fix: detect root snippets correctly - fix: prevent false positive store declarations ([#​2422](https://togithub.com/sveltejs/language-tools/issues/2422)) ### [`v3.8.2`](https://togithub.com/sveltejs/language-tools/releases/tag/svelte-check-3.8.2) [Compare Source](https://togithub.com/sveltejs/language-tools/compare/svelte-check-3.8.1...svelte-check-3.8.2) - chore: reduce dependencies ([#​2413](https://togithub.com/sveltejs/language-tools/issues/2413)) ([#​2400](https://togithub.com/sveltejs/language-tools/issues/2400)) - fix: handle snippets with typed arguments ([#​2412](https://togithub.com/sveltejs/language-tools/issues/2412)) - fix: handle optional arguments in snippets ([#​2414](https://togithub.com/sveltejs/language-tools/issues/2414))

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