chore(deps-dev): bump stylelint in /desktop-app-legacy

Bumps [stylelint](https://github.com/stylelint/stylelint) from 13.6.1 to 15.10.1.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/stylelint/stylelint/compare/13.6.1...15.10.1)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-type: direct:development
...

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

desktop-app-legacy/package.json

@@ -270,7 +270,7 @@
     "sass-loader": "^9.0.2",
     "sinon": "^7.1.1",
     "style-loader": "^0.23.1",
-    "stylelint": "^13.6.1",
+    "stylelint": "^15.10.1",
     "stylelint-config-prettier": "^4.0.0",
     "stylelint-config-standard": "^18.2.0",
     "terser-webpack-plugin": "^1.1.0",