naive adding of support for Python 3.14

[alessandrofelder]

Description

What is this PR

• Bug fix
• Addition of a new feature
• Other

What does this PR do?
This PR

• ensures the regex inputs in folder.py are Python 3.14 compliant
• runs tests on Python 3.14

References

Closes #735

How has this PR been tested?

Please explain how any new code has been tested, and how you have ensured that no existing functionality has changed.

Does this PR require an update to the documentation?

If any features have changed, or have been added. Please explain how the
documentation has been updated.

Checklist:

• The code has been tested locally
• Tests have been added to cover all new functionality
• The documentation has been updated to reflect any changes
• The code has been formatted with pre-commit

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.27%. Comparing base (94a5d43) to head (40fdd35).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #736      +/-   ##
==========================================
- Coverage   90.30%   90.27%   -0.03%     
==========================================
  Files          54       54              
  Lines        4423     4423              
==========================================
- Hits         3994     3993       -1     
- Misses        429      430       +1     

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[JoeZiminski]

on PR the oldest and latest python are tested, the patch works for 3.9 and 3.13. Will update the CI to run on 3.14 and test it here. Also tested the the relevant part of the gui on local 3.14 and it worked well