refactor(yaml): camelcase iskey

[timreichen]

• replaces iskey with isKey

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.33%. Comparing base (9498a40) to head (af8f3ba).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5365   +/-   ##
=======================================
  Coverage   96.33%   96.33%           
=======================================
  Files         458      458           
  Lines       37849    37849           
  Branches     5619     5619           
=======================================
  Hits        36460    36460           
  Misses       1348     1348           
  Partials       41       41           

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[iuioiua]

Thanks