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

GH-104308: socket.getnameinfo should release the GIL (GH-104307)

* socket.getnameinfo should release the GIL

* 📜🤖 Added by blurb_it.

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(cherry picked from commit faf196213e60d8a90773e9e5680d3252bd294643)

Co-authored-by: Nathaniel J. Smith <njs@pobox.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>