Update build env

[hieuddo]

Description

Python 3.9 reached End-of-Life (EOL), so I think it's sensible to remove 3.9 and add 3.14 to the build workflow.

Related Issues

Checklist:

• I have added tests.
• I have updated the documentation accordingly.
• I have updated README.md (if you are adding a new model).
• I have updated examples/README.md (if you are adding a new example).
• I have updated datasets/README.md (if you are adding a new dataset).

[Copilot]

Pull request overview

Updates the project’s declared and CI-tested Python support window by dropping Python 3.9 and adding Python 3.14, aligning packaging metadata with the CI build matrix.

Changes:

• Bumped requires-python from >=3.9 to >=3.10 and removed the 3.9 trove classifier.
• Updated GitHub Actions matrices to test/build on Python 3.10–3.14.
• Removed the macOS-specific Homebrew installation path that was only needed for Python 3.9.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
pyproject.toml	Updates minimum supported Python version and trove classifiers to reflect dropping 3.9 and adding 3.14.
.github/workflows/python-publish.yml	Updates wheel build matrix to Python 3.10–3.14 and removes the macOS workaround for 3.9.
.github/workflows/python-package.yml	Updates test/lint matrix to Python 3.10–3.14 and removes the macOS workaround for 3.9.

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[lthoang]

LGTM