remove: need for hard coded token

[matmair]

codecov supports github OIDC for uplad so we can remove the hard-coded token

[netlify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.13%. Comparing base (991b578) to head (581852e).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9136      +/-   ##
==========================================
+ Coverage   85.96%   86.13%   +0.16%     
==========================================
  Files        1181     1180       -1     
  Lines       52209    52105     -104     
  Branches     2184     2184              
==========================================
- Hits        44884    44882       -2     
+ Misses       6767     6666     -101     
+ Partials      558      557       -1     

Flag	Coverage Δ
backend	88.11% <ø> (+<0.01%)	⬆️
migrations	42.95% <ø> (+<0.01%)	⬆️
pui	69.57% <ø> (+0.22%)	⬆️

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[matmair]

@SchrodingersGat after merging this we can remove the secret CODECOV_TOKEN