[3.11] gh-103872: Update bundled pip version to 23.1.2

[pfmoore]

closes: #103872
xref: pypa/pip#12000

• Issue: Upgrade the bundled version of pip to 23.1.2 #103872

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Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
(cherry picked from commit 438b811)

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Fedora Clang Installed 3.11 has failed when building commit 57c9634.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/958/builds/715) and take a look at the build logs.
4. Check if the failure is related to this commit (57c9634) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/958/builds/715

Summary of the results of the build (if available):

Click to see traceback logs

remote: Internal Server Error
fatal: unable to access 'https://github.com/python/cpython.git/': The requested URL returned error: 500

chmod: cannot access 'target/': No such file or directory

make: *** No rule to make target 'distclean'.  Stop.