upgrading to support python 3.14

[matthewmarion]

trafficstars

Motivation

Add support for Python 3.14 to keep the client up-to-date with the latest Python releases.

Modifications

• Upgraded pybind11 from 2.10.1 to 3.0.1 for Python 3.14 compatibility
• Updated documentation (README.md, pulsar/init.py) to include Python 3.14
• Added Python 3.14 to CI/CD test matrix for all platforms:
  • Linux (x86_64 and aarch64) for both manylinux and manylinux_musl
  • macOS (universal2)
  • Windows (x64)

Verifying this change

• [ ] CI builds and tests Python 3.14 wheels successfully
• [ ] All existing tests pass on Python 3.14
• [ ] Wheels install correctly on all platforms

Documentation

• Updated README.md requirements section
• Updated pulsar/init.py docstring