Bump sass from 1.86.1 to 1.89.0 in /frontend

Bumps [sass](https://github.com/sass/dart-sass) from 1.86.1 to 1.89.0.
- [Release notes](https://github.com/sass/dart-sass/releases)
- [Changelog](https://github.com/sass/dart-sass/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sass/dart-sass/compare/1.86.1...1.89.0)

---
updated-dependencies:
- dependency-name: sass
  dependency-version: 1.89.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

frontend/obsidian-plugin/package.json

@@ -23,7 +23,7 @@
 		"mini-css-extract-plugin": "^2.9.2",
 		"obsidian": "1.8.7",
 		"resolve-url-loader": "^5.0.0",
-		"sass": "^1.86.1",
+		"sass": "^1.89.0",
 		"sass-loader": "^16.0.5",
 		"sync-client": "file:../sync-client",
 		"terser-webpack-plugin": "^5.3.14",