SUSE-SU-2022:1454-1

This update for python-pip fixes the following issues:

• Add wheel subpackage with the generated wheel for this package (bsc#1176262, CVE-2019-20916).

• Make wheel a separate build run to avoid the setuptools/wheel build cycle.

• Switch this package to use update-alternatives for all files in %{_bindir} so it doesn't collide with the versions on 'the latest' versions of Python interpreter (jsc#SLE-18038, bsc#1195831).