chore: bump stylelint in /examples/openfeature_web/webapp

Bumps [stylelint](https://github.com/stylelint/stylelint) from 16.11.0 to 16.12.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@16.11.0...16.12.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

examples/openfeature_web/webapp/package-lock.json

@@ -49,7 +49,7 @@
     "posthtml": "^0.16.6",
     "posthtml-cli": "^0.10.0",
     "posthtml-modules": "^0.9.1",
-    "stylelint": "^16.11.0",
+    "stylelint": "^16.12.0",
     "webpack": "^5.97.1",
     "webpack-cli": "^5.1.4"
   },