ci: optimize CI workflow

[fabiovincenzi]

• Remove upload/download steps that were uploading and downloading in the same job
• Add install: false to cypress-io/github-action to skip its internal npm ci which was already done by the previous step, avoiding a duplicate install.
• Use --no-fund flag on npm ci to suppress funding messages in CI

[netlify]

✅ Deploy Preview for endearing-brigadeiros-63f9d0 canceled.

Name	Link
🔨 Latest commit	330a12a
🔍 Latest deploy log	https://app.netlify.com/projects/endearing-brigadeiros-63f9d0/deploys/69cf50e899acb9000869db22

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.66%. Comparing base (6900045) to head (330a12a).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1492   +/-   ##
=======================================
  Coverage   89.66%   89.66%           
=======================================
  Files          68       68           
  Lines        4869     4869           
  Branches      888      888           
=======================================
  Hits         4366     4366           
  Misses        485      485           
  Partials       18       18           

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[jescalada]

LGTM! CI execution times are consistently below 4m now, down from around 7-8m. 🚀