Remove upper limitation on version of numba

[Mr-Geekman]

Before submitting (must do checklist)

• Did you read the contribution guide?
• Did you update the docs? We use Numpy format for all the methods and classes.
• Did you write any new necessary tests?
• Did you update the CHANGELOG?

Proposed Changes

Remove upper limitation on version of numba. As I understand it was made for python 3.7 which is now not supported.

Closing issues

[codecov-commenter]

Codecov Report

Merging #1321 (ae1d741) into master (681d8e1) will decrease coverage by 31.99%.
The diff coverage is n/a.

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@@             Coverage Diff             @@
##           master    #1321       +/-   ##
===========================================
- Coverage   88.95%   56.96%   -31.99%     
===========================================
  Files         204      204               
  Lines       12634    12628        -6     
===========================================
- Hits        11238     7193     -4045     
- Misses       1396     5435     +4039     

see 131 files with indirect coverage changes

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