Bump sass from 1.80.6 to 1.81.0 in /client

Bumps [sass](https://github.com/sass/dart-sass) from 1.80.6 to 1.81.0.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.80.6...1.81.0)

---
updated-dependencies:
- dependency-name: sass
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

client/package.json

@@ -10,7 +10,7 @@
   },
   "devDependencies": {
     "@sveltejs/vite-plugin-svelte": "^3.1.2",
-    "sass": "^1.80.6",
+    "sass": "^1.81.0",
     "svelte": "^4.2.19",
     "svelte-preprocess": "^6.0.3",
     "vite": "^5.4.11"