Chore: Bump svelte and svelte-language-server in /server (#140)

Bumps [svelte](https://github.com/sveltejs/svelte/tree/HEAD/packages/svelte) to 4.2.19 and updates ancestor dependency [svelte-language-server](https://github.com/sveltejs/language-tools). These dependencies need to be updated together.


Updates `svelte` from 3.59.2 to 4.2.19
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/[email protected]/packages/svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/svelte/commits/[email protected]/packages/svelte)

Updates `svelte-language-server` from 0.16.13 to 0.17.2
- [Release notes](https://github.com/sveltejs/language-tools/releases)
- [Commits](sveltejs/language-tools@language-server-0.16.13...language-server-0.17.2)

---
updated-dependencies:
- dependency-name: svelte
  dependency-type: indirect
- dependency-name: svelte-language-server
  dependency-type: direct:production
...

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