Switch from bleach to nh3

[philippjfr]

Fixes #6206

Supersedes #8480

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.68%. Comparing base (9a51f67) to head (4d6b7f2).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8503      +/-   ##
==========================================
+ Coverage   85.04%   85.68%   +0.63%     
==========================================
  Files         350      350              
  Lines       56018    56019       +1     
==========================================
+ Hits        47642    47998     +356     
+ Misses       8376     8021     -355     

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.