[FIXED JENKINS-22730] Bump remoting to match Jenkins LTS

Swarm nodes are offlined by Jenkins with the following message:

    "This node is offline because it uses old slave.jar"

Therefore we bump the version of the remoting library to match the one
used in Jenkins LTS (1.544.1).
Merge pull request #14 from mindjiver/JENKINS-22730-swarm-plugin-seems-to-use-old-slave.jar-for-Jenkins

[FIXED JENKINS-22730] Bump remoting to match Jenkins LTS