Filters safe warnings.

[jasonb5]

Description

Filters some safe to ignore warnings.

Two test methods raised RuntimeWarning: invalid value encountered in true_divide.

These warnings will still appear in user code as they may be significant outside of testing.

• Closes [Bug]: Fix warnings in test suite #264

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

If applicable:

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass with my changes (locally and CI/CD build)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have noted that this is a breaking change for a major release (fix or feature that would cause existing functionality to not work as expected)

[tomvothecoder]

LGTM