Update to Python 3.14 (#7918)

Update to Python 3.14 (#7918)

* update to Python 3.14

* [autofix.ci] apply automated fixes

* fix python 3.14 compatibility

* bump minimum required zstandard version

0.15 was causing CI issues with Python 3.14.

* Revert "Bump hypothesis dependency (#7865)"

This reverts commit 0981668515ce04123279e933470b1bdd5aff8726.

windows-curses has no abi3 wheels, which blocks adoption of Python 3.14. Kill it with fire.

* remove compression from HAR tests

* add `build-essential` to build jobs

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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>