New version: PythonCall v0.9.16

[JuliaRegistrator]

• Registering package: PythonCall
• Repository: https://github.com/JuliaPy/PythonCall.jl
• Created by: @cjdoris
• Version: v0.9.16
• Commit: 6975f7c5d1f08fc4db785e40d1041492346a21c1
• Reviewed by: @cjdoris
• Reference: JuliaPy/PythonCall.jl@6975f7c#commitcomment-139799683
• Description: Python and Julia in harmony.
• Release notes:

* Big internal refactor.
* New unexported functions: `python_executable_path`, `python_library_path`, `python_library_handle` and `python_version`.
* `Py` is now treated as a scalar when broadcasting.
* `PyArray` is now serializable.
* Removed compatibility with Julia 1.10.1 and 1.10.2 (to be fixed in 1.10.3 and 1.11.0) due to an upstream bug.
* Bug fixes.

[github-actions]

Your new version pull request met all of the guidelines for auto-merging and is scheduled to be merged in the next round.

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