5.12.4

(chore): Bump the Python SDK generator container’s Node base image from node:22.22-bookworm-slim to node:24.15-trixie-slim. Aligns the generator with the rest of the Fern generator containers on a single Node major version (Node 24) and Debian release (trixie). Trixie ships patched versions of glibc, dpkg, nghttp2, libcap2, systemd, libgcrypt20, krb5, curl, and expat that are not available on bookworm, clearing the AWS Inspector findings that dist-upgrade alone could not.