feat: add support for Python 3.14

[my1e5]

Co-authored by: Dimitris Iliopoulos dimitris.iliopoulos@gmail.com

This PR adds support for Python 3.14 by bumping the pyo3 and rust-numpy dependencies to version 0.26. This requires a small refactor to the source code. These changes are identical to those made by @diliop in #85, so I've added them as a co-author to recognise their contribution.

Closes #87

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (05334d5) to head (1fed204).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main     #89   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files          4       4           
  Lines        371     371           
=====================================
  Misses       371     371           

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[codspeed-hq]

CodSpeed Performance Report

Merging #89 will degrade performances by 39.77%

_{Comparing my1e5:python314 (1fed204) with main (7e2f14a)}

🎉 Hooray! pytest-codspeed just leveled up to 4.1.1!

A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.

Summary

⚡ 36 improvements
❌ 11 regressions
✅ 631 untouched

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	test_lttb_with_x[False-float32-1,000-1,000,000]	13.6 ms	12.3 ms	+11.23%
⚡	test_lttb_with_x[False-float32-100-1,000,000]	13.7 ms	12.3 ms	+11.25%
⚡	test_lttb_with_x[False-float32-5,000-1,000,000]	13.8 ms	12.4 ms	+11.03%
⚡	test_lttb_with_x[False-float64-1,000-1,000,000]	14.6 ms	13.2 ms	+10.47%
⚡	test_lttb_with_x[False-float64-100-1,000,000]	14.6 ms	13.2 ms	+10.46%
⚡	test_lttb_with_x[False-float64-5,000-1,000,000]	14.6 ms	13.3 ms	+10.31%
⚡	test_lttb_with_x[False-int32-1,000-1,000,000]	13.7 ms	12.3 ms	+11.21%
⚡	test_lttb_with_x[False-int32-100-1,000,000]	13.7 ms	12.3 ms	+11.28%
⚡	test_lttb_with_x[False-int32-5,000-1,000,000]	13.9 ms	12.5 ms	+11.02%
⚡	test_lttb_with_x[True-float32-1,000-1,000,000]	13.7 ms	12.3 ms	+11.31%
⚡	test_lttb_with_x[True-float32-100-1,000,000]	13.7 ms	12.3 ms	+11.24%
⚡	test_lttb_with_x[True-float32-5,000-1,000,000]	13.8 ms	12.5 ms	+10.98%
⚡	test_lttb_with_x[True-float64-1,000-1,000,000]	14.6 ms	13.2 ms	+10.43%
⚡	test_lttb_with_x[True-float64-100-1,000,000]	14.6 ms	13.3 ms	+10.46%
⚡	test_lttb_with_x[True-float64-5,000-1,000,000]	14.7 ms	13.3 ms	+10.26%
⚡	test_lttb_with_x[True-int32-1,000-1,000,000]	13.7 ms	12.4 ms	+11.21%
⚡	test_lttb_with_x[True-int32-100-1,000,000]	13.8 ms	12.4 ms	+11.18%
⚡	test_lttb_with_x[True-int32-5,000-1,000,000]	13.9 ms	12.5 ms	+10.95%
⚡	test_m4_no_x[True-float64-1,000-100,000]	768.1 µs	679.4 µs	+13.06%
⚡	test_m4_no_x[True-float64-100-100,000]	739.8 µs	637.6 µs	+16.03%
...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

[jvdd]

LGTM! Thanks for submitting this PR @my1e5 & @diliop

I'll create a release later today!