python3-pip: upgrade 20.0.2 -> 21.1.2
21.1.2 contains a fix for CVE-2021-3572
(https://github.com/pypa/pip/commit/
e46bdda9711392fec0c45c1175bae6db847cb30b)
The LICENSE.txt signature changed due to an update to the copyright
dates, but the terms are the same.
Also update 0001-change-shebang-to-python3.patch to cover all files in
pip's src directory, since we need to ensure compatibility.
Finally, fix the ordering of the "inherit" and "SRC_URI" lines so that
devtool will correctly identify that there is a new version upstream.
Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
