Deps: update jnr-unixsocket to version 0.21
Deps: update jnr-unixsocket to version 0.21

Signed-off-by: Paul Vaduva <5cbc03469f4b7ee82a907aa58cef1578f48755c4@enea.com>

vjuranek/docker-maven-plugin,rhuss/docker-maven-plugin,rhuss/docker-maven-plugin,vjuranek/docker-maven-plugin,fabric8io/docker-maven-plugin,fabric8io/docker-maven-plugin,fabric8io/docker-maven-plugin,vjuranek/docker-maven-plugin