Bump sass from 1.77.6 to 1.77.8 in /frontend in the sass group

Bumps the sass group in /frontend with 1 update: [sass](https://github.com/sass/dart-sass).


Updates `sass` from 1.77.6 to 1.77.8
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.77.6...1.77.8)

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

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

frontend/package.json

@@ -75,7 +75,7 @@
     "express": "^4.19.2",
     "pinia": "^2.1.7",
     "pinia-plugin-persistedstate": "^3.2.1",
-    "sass": "^1.77.6",
+    "sass": "^1.77.8",
     "sass-loader": "^14.2.1",
     "sirv": "^2.0.4",
     "ts-node": "^10.9.2",