build(deps-dev): bump svelte-preprocess from 6.0.2 to 6.0.3

Bumps [svelte-preprocess](https://github.com/sveltejs/svelte-preprocess) from 6.0.2 to 6.0.3.
- [Changelog](https://github.com/sveltejs/svelte-preprocess/blob/main/CHANGELOG.md)
- [Commits](sveltejs/svelte-preprocess@v6.0.2...v6.0.3)

---
updated-dependencies:
- dependency-name: svelte-preprocess
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -19,7 +19,7 @@
     "svelte": "^4.2.19",
     "svelte-check": "^4.0.2",
     "svelte-hash": "^1.0.1",
-    "svelte-preprocess": "^6.0.2",
+    "svelte-preprocess": "^6.0.3",
     "tslib": "^2.7.0",
     "typescript": "^5.6.2",
     "vite": "^5.4.7",