Support Python 3.14 syntax

[seddonym]

As raised here #268

(Currently this is just a failing test.)

Hopefully upgrading the Ruff libraries will sort this out.

[codspeed-hq]

CodSpeed Performance Report

Merging #269 will not alter performance

_{Comparing support-python-3.14-syntax (f87361c) with main (558e62c)}

Summary

✅ 26 untouched
⏩ 23 skipped¹

Footnotes

1. 23 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩