build(python): add support for Python 3.14

[tiborsimko]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 41.24%. Comparing base (a4d08b5) to head (13fae19).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
reana_commons/version.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #506   +/-   ##
=======================================
  Coverage   41.24%   41.24%           
=======================================
  Files          28       28           
  Lines        2039     2039           
=======================================
  Hits          841      841           
  Misses       1198     1198           

Files with missing lines	Coverage Δ
reana_commons/version.py	0.00% <0.00%> (ø)

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[tiborsimko]

Note that ideally we release a new version of pytest-reana from reanahub/pytest-reana#143 then bump the pytest-reana dependency here (in order to get a new pytest version range) and merge this one afterwards.