This brings in the latest pip release into CPython's bundled copies, notably, adding support for free-threading builds which is worth backporting the bundle update to 3.13 for.

Linked PRs

• gh-120888: Bump bundled pip to 24.1.1 #120889
• [3.13] gh-120888: Bump bundled pip to 24.1.1 (GH-120889) #121080
• [3.12] gh-120888: Bump bundled pip to 24.1.1 (gh-120889) #121348