[TASK]: Bump stylelint in /packages/typo3-docs-theme

Bumps [stylelint](https://github.com/stylelint/stylelint) from 16.25.0 to 16.26.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@16.25.0...16.26.0)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-version: 16.26.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/typo3-docs-theme/package-lock.json

@@ -22,7 +22,7 @@
         "grunt-sass": "^4.0.1",
         "grunt-stylelint": "^0.20.1",
         "sass": "^1.94.2",
-        "stylelint": "^16.25.0",
+        "stylelint": "^16.26.0",
         "vite": "^7.2.4"
     },
     "scripts": {