DEPL-6622: Release jenkins plugin 4.5.0 that works with XLD 4.5.1

This is a series of commits that should work with XLD 4.5.1. Unfortunately, hidden properties are hardcoded to false in RemoteDescriptor so we need to wait for a new version of remote-booter that fixes this in order to resolve DEPL-4899 (do not show hidden properties in the UI).
Re-add license header?