Bump svelte from 5.16.6 to 5.51.5

Bumps [svelte](https://github.com/sveltejs/svelte/tree/HEAD/packages/svelte) from 5.16.6 to 5.51.5.
- [Release notes](https://github.com/sveltejs/svelte/releases)
- [Changelog](https://github.com/sveltejs/svelte/blob/main/packages/svelte/CHANGELOG.md)
- [Commits](https://github.com/sveltejs/svelte/commits/svelte@5.51.5/packages/svelte)

---
updated-dependencies:
- dependency-name: svelte
  dependency-version: 5.51.5
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package.json

@@ -44,7 +44,7 @@
         "rehype-slug": "^6.0.0",
         "rehype-toc": "^3.0.2",
         "shiki": "^1.23.0",
-        "svelte": "^5.0.0",
+        "svelte": "^5.51.5",
         "svelte-check": "^4.0.0",
         "svelte-codemirror-editor": "^1.4.1",
         "svelte-meta-tags": "^4.0.4",