Bump sass from 1.69.3 to 1.69.4 in /frontend

Bumps [sass](https://github.com/sass/dart-sass) from 1.69.3 to 1.69.4.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.69.3...1.69.4)

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

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

frontend/package.json

@@ -42,7 +42,7 @@
     "marked": "^9.1.2",
     "nuxt": "^3.8.0",
     "pinia": "^2.1.7",
-    "sass": "^1.69.3",
+    "sass": "^1.69.4",
     "slugify": "^1.6.6",
     "typescript": "^5.2.2",
     "vue-codemirror": "^6.1.1",