devel/py-orjson: Update to 3.11.4

• Switch to PyPI because it's the preferred source for Python ports.

• Remove USE_PYTHON=cython instead of setting it to USE_PYTHON=cython3, because Cython is not needed at all. [1]

• Strip shared library.

Changelog since 3.10.15:

https://github.com/ijl/orjson/blob/3.11.4/CHANGELOG.md

PR: 291423, 289075 [1]
Approved by: Ivan Rozhuk (maintainer)