chore(deps): update svelte

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@sveltejs/kit (source)	1.29.0 -> 1.29.1
svelte-preprocess	5.1.1 -> 5.1.2

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Release Notes

sveltejs/kit (@​sveltejs/kit)

v1.29.1

Compare Source

Patch Changes

• fix: correctly return 415 when unexpected content types are submitted to actions (#​11255)

• chore: deprecate preloadCode calls with multiple arguments (#​11266)

sveltejs/svelte-preprocess (svelte-preprocess)

v5.1.2

Compare Source

• chore: mark postcss-load-config 5 as supported (3b5b1f0)

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