Update stylelint requirement to 9.2.0 (#9897)

Updates the requirements on [stylelint](https://github.com/stylelint/stylelint) to permit the latest version.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stylelint/stylelint/commits/9.2.0)

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

package.json

@@ -158,7 +158,7 @@
     "reqwest": "^2.0.5",
     "rimraf": "^2.5.4",
     "scrollama": "^1.4.1",
-    "stylelint": "9.1.3",
+    "stylelint": "9.2.0",
     "stylelint-config-standard": "^18.0.0",
     "typescript": "~2.8.1",
     "unified": "^6.1.5",