Use admin github token for releaser

[blink1073]

We need to rely on the user permissions check instead of using the user GITHUB_TOKEN directly, because even as an admin I was unable to push commits directly to the main branch without turning off the branch protection rules.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.52%. Comparing base (8811e96) to head (6e2ba73).
Report is 329 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1025      +/-   ##
==========================================
- Coverage   72.65%   72.52%   -0.14%     
==========================================
  Files          64       64              
  Lines        8251     8251              
  Branches     1257     1257              
==========================================
- Hits         5995     5984      -11     
- Misses       1839     1851      +12     
+ Partials      417      416       -1     

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