Vendor docs CSS dependencies

[maxstanley]

📑 Summary

Remove dependencies on external sites for CSS on the docs pages.

📏 Design Decisions

• Prefer centralised dependency management with package.json
• Use vendored dependencies for simplified mirroring and deployment

[netlify]

✅ Deploy Preview for mermaid-js ready!

Name	Link
🔨 Latest commit	fe905ce
🔍 Latest deploy log	https://app.netlify.com/sites/mermaid-js/deploys/65e72ad457272a0009a543ea
😎 Deploy Preview	https://deploy-preview-5350--mermaid-js.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.22%. Comparing base (b324574) to head (fe905ce).

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #5350       +/-   ##
============================================
+ Coverage    43.37%   79.22%   +35.85%     
============================================
  Files           23      175      +152     
  Lines         5130    14531     +9401     
  Branches        23      868      +845     
============================================
+ Hits          2225    11512     +9287     
+ Misses        2904     2816       -88     
- Partials         1      203      +202     

Flag	Coverage Δ
e2e	84.79% <ø> (?)
unit	43.37% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 170 files with indirect coverage changes

[aloisklink]

Looks good to me!

Btw, @maxstanley, I'm going to push to your branch and update this PR to fix the merge conflicts in the pnpm-lock.yaml file and move the CSS dependencies from devDependencies to dependencies.

[mermaid-bot]

@maxstanley, Thank you for the contribution!
You are now eligible for a year of Premium account on MermaidChart.
Sign up with your GitHub account to activate.