package/uacme: security bump to version 1.7.4
Includes https://github.com/ndilieto/uacme/commit/fe91f46b620f8c58805fcf48cb4f4a793c8a47a4
Fixes https://github.com/ndilieto/uacme/issues/64
Signed-off-by: Nicola Di Lieto <nicola.dilieto@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>