Suppress FutureWarnings from user output

[danyeaw]

We are getting some FutureWarnings from the packaging library:

~/Downloads [1]$ conda pypi install a2ml                                                                                                   (/tmp/test2) 
Inspecting pypi and conda dependencies
PYPI index channels:
 - https://pypi.org/simple/
Conda channels:
 - file:///Users/dyeaw/Library/Application%20Support/conda-pypi
 - defaults
Converting required pypi packages: | /Users/dyeaw/miniconda3/lib/python3.13/site-packages/unearth/evaluator.py:223: FutureWarning: .* suffix can only be used with `==` or `!=` operators
  self.check_requires_python(link)                                                                                                                    failed

CondaPypiError: No wheel file available for liac-arff ==2.4.0. Only source distributions are available. conda-pypi requires wheel files for conversion.

We should suppress the warning so that it isn't visible to the user. This package also has an error that there is no wheel for one of its dependencies that of course does need to be displayed.