Renovate formatting in test_checkers and test_frontend

[akx]

No description provided.

[codecov]

Codecov Report

Merging #950 (52808a7) into master (0364136) will decrease coverage by 0.66%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #950      +/-   ##
==========================================
- Coverage   90.53%   89.87%   -0.66%     
==========================================
  Files          24       24              
  Lines        4394     4394              
==========================================
- Hits         3978     3949      -29     
- Misses        416      445      +29     

Impacted Files	Coverage Δ
babel/localtime/_win32.py	25.92% <0.00%> (-37.04%)	⬇️
babel/localtime/_helpers.py	50.00% <0.00%> (-11.54%)	⬇️
babel/localtime/__init__.py	59.45% <0.00%> (-2.71%)	⬇️
babel/localedata.py	95.16% <0.00%> (-0.81%)	⬇️
babel/messages/frontend.py	87.01% <0.00%> (-0.75%)	⬇️

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