CHORE: Add numpy as default requirement

[Alberto-DM]

Description

Numpy is now a default requirement and not anymore optional.
All checks and try: except: for the numpy import have been removed.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.29%. Comparing base (7fece27) to head (69372b4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6289      +/-   ##
==========================================
+ Coverage   85.28%   85.29%   +0.01%     
==========================================
  Files         173      173              
  Lines       65358    65325      -33     
==========================================
- Hits        55742    55721      -21     
+ Misses       9616     9604      -12     

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[SMoraisAnsys]

LGTM