package/chicken: security bump to 5.4.0
This release includes a fix for CVE-2022-45145. Also, a copyright date
in the LICENSE file changed, so the hash for it has changed too.
Signed-off-by: Woodrow Douglass <wdouglass@carnegierobotics.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>