iproute: 5.3.0 -> 5.4.0

"Not a lot of changes in this release, most are related to fixing output
formatting and documentation." [0]

File changes (additions/removals):
+share/man/man8/devlink-trap.8.gz

nix path-info -S:
5.3.0 46078816
5.4.0 46095296

[0]: https://www.spinics.net/lists/netdev/msg615781.html