feat: allow commonjs config file for eslint

[vitaliytv]

Readiness Checklist

Author/Contributor

• If documentation is needed for this change, has that been included in this pull request

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance

[vitaliytv]

proof

[nvuillam]

Great, thanks for your contribution !
Please can you update CHANGELOG.md ? :)

[codecov-commenter]

Codecov Report

Merging #629 (d184d54) into master (f964e7b) will increase coverage by 0.98%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #629      +/-   ##
==========================================
+ Coverage   86.68%   87.67%   +0.98%     
==========================================
  Files         130      130              
  Lines        3034     3034              
==========================================
+ Hits         2630     2660      +30     
+ Misses        404      374      -30     

Impacted Files	Coverage Δ
megalinter/MegaLinter.py	90.06% <0.00%> (+2.24%)	⬆️
megalinter/reporters/UpdatedSourcesReporter.py	89.18% <0.00%> (+2.70%)	⬆️
...alinter/tests/test_megalinter/helpers/utilstest.py	97.07% <0.00%> (+9.20%)	⬆️

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[nvuillam]

I updated myself the changelog and merged the PR, thanks for your contribution :)