Hotfix: Allow overriding node celery config with kwargs

[Nusnus]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 25.39%. Comparing base (ed67255) to head (d5e2cb1).

Files	Patch %	Lines
src/pytest_celery/api/base.py	90.90%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #249      +/-   ##
==========================================
+ Coverage   24.82%   25.39%   +0.57%     
==========================================
  Files          37       37              
  Lines        1128     1138      +10     
  Branches      219      222       +3     
==========================================
+ Hits          280      289       +9     
  Misses        822      822              
- Partials       26       27       +1     

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