add networking fox to changelog

Signed-off-by: Victor Vieux <vieux@docker.com>

CHANGELOG.md

@@ -34,6 +34,9 @@ To resolve this:
 After making those changes, run `sudo systemctl daemon-reload`, and `sudo
 systemctl restart docker` to reload changes and (re)start the docker daemon.
 
+### Networking
+
+- Fix panic in docker network ls when a network was created with `--ipv6` and no ipv6 `--subnet` in older docker versions [#29416](https://github.com/docker/docker/pull/29416)
 
 ### Contrib