[Demo Dependencies]: Bump the dependencies-dev group

Bumps the dependencies-dev group in /docs-src with 2 updates: [sass](https://github.com/sass/dart-sass) and [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite).


Updates `sass` from 1.77.2 to 1.77.4
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](sass/dart-sass@1.77.2...1.77.4)

Updates `vite` from 5.2.11 to 5.2.12
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/main/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v5.2.12/packages/vite)

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

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

docs-src/package.json

@@ -34,8 +34,8 @@
     "@testing-library/user-event": "^14.5.2",
     "@vitejs/plugin-react": "^4.3.0",
     "rimraf": "^5.0.7",
-    "sass": "^1.77.2",
-    "vite": "^5.2.11",
+    "sass": "^1.77.4",
+    "vite": "^5.2.12",
     "vite-plugin-svgr": "^4.2.0"
   }
 }