[stable8] chore(docs): Automated styling update from server

[nextcloud-command]

Auto-generated update of our locally cached css styling from

• https://nextcloud.github.io/server/apps/theming/css/default.css
• https://nextcloud.github.io/server/core/css/server.css
• https://nextcloud.github.io/server/core/css/apps.css
• https://nextcloud.github.io/server/dist/icons.css

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.85%. Comparing base (501e021) to head (c8512bd).

Additional details and impacted files

@@           Coverage Diff            @@
##           stable8    #8977   +/-   ##
========================================
  Coverage    45.85%   45.85%           
========================================
  Files          197      197           
  Lines         5243     5243           
  Branches      1321     1321           
========================================
  Hits          2404     2404           
  Misses        2742     2742           
  Partials        97       97           

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