Fix pyproject.toml warning

[carlosal1015]

Hi, when run the following command in order to generate the wheels

python -m build --wheel --skip-dependency-check --no-isolation

shows in the following warning in the process

WARNING Found 'build-systems' in pyproject.toml, did you mean 'build-system'?
* Building wheel..

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (58c39e1) 97.88% compared to head (0adfc33) 97.88%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #6   +/-   ##
=======================================
  Coverage   97.88%   97.88%           
=======================================
  Files           6        6           
  Lines         661      661           
=======================================
  Hits          647      647           
  Misses         14       14           

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[ASEM000]

Thanks for your fix.