socket.getnameinfo doesn't drop the GIL

[njsmith]

It should do that. Trivial fix is in #104307 but creating an issue to make bedevere happy.

Linked PRs

• GH-104308: socket.getnameinfo should release the GIL #104307
• [3.11] GH-104308: socket.getnameinfo should release the GIL (GH-104307) #104313