Update doc dependencies and supported Python runtime to publish latest doc updates

[bryantbiggs]

Description

• Update docs site dependencies to latest
• Update Netlify Python runtime to supported runtime (Python 3.8 is EOL)
• Update docs site CDN JS versions to more current versions

The current site is not updating - possibly due to Netlify not publishing updates due to the unsupported Python version specified (not 100% certain, someone would need to log in to Netlify to check). If you look at the current site banner versus running locally with these changes - you'll see the banner running locally shows notices for Auto Mode and Hybrid Nodes which were launched at 0.195.0 for re:Invent. In addition, the reference schema does not change the fields for Auto Mode or Hybrid Node.

Current banner:

Banner running locally with these changes - notice Auto Mode and Hybrid Node notices:

• Resolves [Feature] add autoModeConfig to schema #8097

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the userdocs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes
• (Core team) Added labels for change area (e.g. area/nodegroup) and kind (e.g. kind/improvement)

BONUS POINTS checklist: complete for good vibes and maybe prizes?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟

[bryantbiggs]

preview site looks good https://deploy-preview-8119--eksctl.netlify.app/

[bryantbiggs]

Pushed a fix for link checker which seems to have been failing for quite some time https://github.com/eksctl-io/eksctl/actions/workflows/link-checker.yaml