* Rework 1.21 content into one heading and add note at top
* Add notes about extended k8s token duration
* Add example of ClusterRoleBinding for using client JWTs
* website: bump to docs-page prerelease, support hidden pages
* website: switch to hidden pages approach for docs and api-docs
* website: remove temporary fix for hidden pages, and related check
* website: fix content structure issue with docs/auth/jwt
* website: bump to latest pre-release
* website: bump to stable docs-page, w next-mdx-remote bump
* website: bump to latest markdown-page