[chore] Fix check-merge-freeze check

[dmitryax]

To unblock #13933

The logic seems incorrect. The check should run when

(!startsWith(title, '[chore] Prepare release')) || (user != 'otelbot[bot]')

or 

!(startsWith(title, '[chore] Prepare release')) && (user == 'otelbot[bot]'))

instead of

(!startsWith(title, '[chore] Prepare release')) || (user == 'otelbot[bot]')

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.66%. Comparing base (d00f059) to head (4b5379f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #13934   +/-   ##
=======================================
  Coverage   91.65%   91.66%           
=======================================
  Files         652      652           
  Lines       42516    42516           
=======================================
+ Hits        38970    38974    +4     
+ Misses       2736     2733    -3     
+ Partials      810      809    -1     

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[jade-guiton-dd]

Sorry about that mistake 😓 The logic for that condition changed so many times I got confused

[dmitryax]

@jade-guiton-dd no worries at all :)