Bump svelte-preprocess from 6.0.1 to 6.0.3 (#46)

Bumps [svelte-preprocess](https://github.com/sveltejs/svelte-preprocess) from 6.0.1 to 6.0.3.
- [Changelog](https://github.com/sveltejs/svelte-preprocess/blob/main/CHANGELOG.md)
- [Commits](sveltejs/svelte-preprocess@v6.0.1...v6.0.3)

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

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Author: dependabot[bot]

package-lock.json

@@ -20,7 +20,7 @@
     "rollup-plugin-terser": "^7.0.0",
     "svelte": "^4.2.18",
     "svelte-check": "^3.8.5",
-    "svelte-preprocess": "^6.0.1",
+    "svelte-preprocess": "^6.0.3",
     "svelte-spa-router": "^4.0.1"
   },
   "dependencies": {