Update dependency svelte to v5.20.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
svelte (source)	5.19.10 -> 5.20.1

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Release Notes

sveltejs/svelte (svelte)

v5.20.1

Compare Source

Patch Changes

• fix: ensure AST analysis on svelte.js modules succeeds (#​15297)

• fix: ignore typescript abstract methods (#​15267)

• fix: correctly ssr component in svelte:head with $props.id() or css='injected' (#​15291)

v5.20.0

Compare Source

Minor Changes

• feat: SSR-safe ID generation with $props.id() (#​15185)

Patch Changes

• fix: take private and public into account for constant_assignment of derived state (#​15276)

• fix: value/checked not correctly set using spread (#​15239)

• chore: tweak effect self invalidation logic, run transition dispatches without reactive context (#​15275)

• fix: use importNode to clone templates for Firefox (#​15272)

• fix: recurse into $derived for ownership validation (#​15166)

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Latest commit: 9574887

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