Bump @sveltejs/adapter-vercel from 5.4.7 to 5.5.3

Bumps [@sveltejs/adapter-vercel](https://github.com/sveltejs/kit/tree/HEAD/packages/adapter-vercel) from 5.4.7 to 5.5.3.
- [Release notes](https://github.com/sveltejs/kit/releases)
- [Changelog](https://github.com/sveltejs/kit/blob/main/packages/adapter-vercel/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/kit/commits/@sveltejs/adapter-vercel@5.5.3/packages/adapter-vercel)

---
updated-dependencies:
- dependency-name: "@sveltejs/adapter-vercel"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]