[MAINT]: Drop Python 3.9 and add Python 3.14 support

[synchon]

• description of feature/fix
• tests added/passed
• add an entry for the latest changes

This PR drops Python 3.9 support and adds Python 3.14 support. Upgrades codebase to follow Python >=3.10 syntax changes, bumps dependencies and also adds proper uv support by adding lockfile.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.45%. Comparing base (0f459e2) to head (d94e11d).
⚠️ Report is 51 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #474      +/-   ##
==========================================
- Coverage   91.60%   91.45%   -0.16%     
==========================================
  Files         146      146              
  Lines        5956     5850     -106     
  Branches      951      949       -2     
==========================================
- Hits         5456     5350     -106     
  Misses        324      324              
  Partials      176      176              

Flag	Coverage Δ
docs	100.00% <ø> (ø)

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Files with missing lines	Coverage Δ
junifer/api/functions.py	91.24% <ø> (-0.13%)	⬇️
...er/api/queue_context/gnu_parallel_local_adapter.py	92.78% <ø> (-0.15%)	⬇️
junifer/api/queue_context/htcondor_adapter.py	95.93% <ø> (-0.07%)	⬇️
junifer/cli/cli.py	81.48% <ø> (-0.34%)	⬇️
junifer/cli/parser.py	85.89% <ø> (-0.53%)	⬇️
junifer/data/_dispatch.py	93.50% <ø> (-0.09%)	⬇️
junifer/data/coordinates/_coordinates.py	100.00% <ø> (ø)
junifer/data/maps/_ants_maps_warper.py	100.00% <ø> (ø)
junifer/data/maps/_maps.py	98.88% <ø> (-0.02%)	⬇️
junifer/data/masks/_ants_mask_warper.py	75.00% <ø> (-1.93%)	⬇️
... and 80 more

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[fraimondo]

I think you have some UV stuff filtered. Maybe add them to the .gitignore?

[github-actions]

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