Bump @sveltejs/kit from 2.49.5 to 2.53.0

Bumps [@sveltejs/kit](https://github.com/sveltejs/kit/tree/HEAD/packages/kit) from 2.49.5 to 2.53.0.
- [Release notes](https://github.com/sveltejs/kit/releases)
- [Changelog](https://github.com/sveltejs/kit/blob/main/packages/kit/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/kit/commits/@sveltejs/kit@2.53.0/packages/kit)

---
updated-dependencies:
- dependency-name: "@sveltejs/kit"
  dependency-version: 2.53.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

ab-testing/frontend/package.json

@@ -15,7 +15,7 @@
 		"@guardian/ab-testing-config": "workspace:ab-testing-config",
 		"@sveltejs/adapter-auto": "^6.0.0",
 		"@sveltejs/adapter-static": "^3.0.8",
-		"@sveltejs/kit": "^2.52.2",
+		"@sveltejs/kit": "^2.53.1",
 		"@sveltejs/vite-plugin-svelte": "^5.0.0",
 		"svelte": "^5.53.3",
 		"svelte-check": "^4.0.0",