580 mirdata multiple fixes

[guillemcortes]

Addressing #580

• Fix tox for formatting test
• Pin black version to 23.1.0 --> rollback, will do when terminating python3.6 support
• Upgrade librosa version and ensure python3.6 compatibility
• Black formatting with new 23.1.0 version
• Fixing egfxset expected return value
• Mock pandas import at sphinx autodoc
• Fix black version for python3.6

[guillemcortes]

Discussion: #580

[codecov]

Codecov Report

Merging #581 (6c5a1c8) into master (c9fd249) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #581      +/-   ##
==========================================
- Coverage   96.85%   96.84%   -0.01%     
==========================================
  Files          55       56       +1     
  Lines        6705     6717      +12     
==========================================
+ Hits         6494     6505      +11     
- Misses        211      212       +1     

[genisplaja]

I think that looks good! Thanks @guillemcortes :) That would fix what we discussed last week. What do you guys think @harshpalan, @magdalenafuentes, @nkundiushuti? Should we merge?

[harshpalan]

Hi, @guillemcortes and @genisplaja. This looks good. I'll approve the changes and we can merge them. Thanks :)