revert maintainer codecov guard

[kamilon]

Turns out this change isn't actually needed. We do want to keep the manual workflow ability though.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.42%. Comparing base (5203d64) to head (91b1b73).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #643   +/-   ##
=======================================
  Coverage   78.42%   78.42%           
=======================================
  Files          22       22           
  Lines        3690     3690           
=======================================
  Hits         2894     2894           
  Misses        658      658           
  Partials      138      138           

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