docs: update sponsor image to be larger

[lennonnikolas]

PR Checklist

• Addresses an existing open issue: fixes 📝 Docs: Top sponsors are small images on the new website #5652
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Update the sponsor image (Localize) to be larger

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.41%. Comparing base (047227f) to head (8e53911).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5659   +/-   ##
=======================================
  Coverage   88.41%   88.41%           
=======================================
  Files          66       66           
  Lines        4792     4792           
  Branches      977      977           
=======================================
  Hits         4237     4237           
  Misses        555      555           

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[JoshuaKGoldberg]

Thanks! 💅