Changelog:
==========
Support Python 3.11 (beta)
refresh ci settings.
Don't define _*ENDIAN macro on Unix.
Update setuptools and black
Use PyFloat_Pack8() on Python 3.11a7
Upgrade black to fix CI
Fix Unpacker max_buffer_length handling
ci: Update action versions.
Signed-off-by: Xu Huan <xuhuan.fnst@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
