chore(deps): update dependency svelte to ^5.4.0 [skip ci]

This MR contains the following updates:

Package	Type	Update	Change
svelte (source)	devDependencies	minor	^5.3.1 -> ^5.4.0

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Release Notes

sveltejs/svelte (svelte)

v5.4.0

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Minor Changes

• feat: support #each without as (#​14396)

v5.3.2

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Patch Changes

• fix: correctly prune CSS for elements inside snippets (#​14494)

• fix: render attributes during SSR regardless of case (#​14492)

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