fix: reduce number of events on front page

[sachinchauhan2889]

Fixes #5579

Short description of what this resolves:

reduce events on front page.

• Featured Events: 6
• Upcoming Events: 12
• Call for Speakers: 6

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[vercel]

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🔍 Inspect: https://vercel.com/eventyay/open-event-frontend/hrmnk5e49
✅ Preview: https://open-event-frontend-git-reduce-events.eventyay.vercel.app

[codecov]

Codecov Report

Merging #5710 (0944b91) into development (7c4f3e8) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #5710      +/-   ##
===============================================
- Coverage        23.71%   23.66%   -0.06%     
===============================================
  Files              510      510              
  Lines             5422     5422              
  Branches            59       59              
===============================================
- Hits              1286     1283       -3     
- Misses            4121     4123       +2     
- Partials            15       16       +1     

Impacted Files	Coverage Δ
app/routes/index.js	78.57% <ø> (ø)
app/services/cache.ts	64.15% <0.00%> (-5.67%)	⬇️

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[mariobehling]

This does not result in the correct number of events on the front page.

[mariobehling]

There is no link "More events" neither.