chore(deps): update dependency @sveltejs/adapter-vercel to v5.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@sveltejs/adapter-vercel (source)	5.3.2 -> 5.4.0

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Release Notes

sveltejs/kit (@​sveltejs/adapter-vercel)

### [`v5.4.0`](https://togithub.com/sveltejs/kit/blob/HEAD/packages/adapter-vercel/CHANGELOG.md#540) [Compare Source](https://togithub.com/sveltejs/kit/compare/@sveltejs/adapter-vercel@5.3.2...@sveltejs/adapter-vercel@5.4.0) ##### Minor Changes - chore(deps): upgrade to esbuild 0.21 ([#​12415](https://togithub.com/sveltejs/kit/pull/12415)) ##### Patch Changes - Updated dependencies \[[`84298477a014ec471839adf7a4448d91bc7949e4`](https://togithub.com/sveltejs/kit/commit/84298477a014ec471839adf7a4448d91bc7949e4), [`5645614f497931f587b7cb8b3c885fce892a6a72`](https://togithub.com/sveltejs/kit/commit/5645614f497931f587b7cb8b3c885fce892a6a72), [`84298477a014ec471839adf7a4448d91bc7949e4`](https://togithub.com/sveltejs/kit/commit/84298477a014ec471839adf7a4448d91bc7949e4)]: - [@​sveltejs/kit](https://togithub.com/sveltejs/kit)[@​2](https://togithub.com/2).5.18

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