Revert "Roundcube 1.4.5"

This reverts commit d650c370.

Mitigation for contacts having disappeared.

Dockerfile

 FROM debian:stable AS build
 
-ENV RC_VERSION=1.4.5
+ENV RC_VERSION=1.4.4
 
 ADD . /build
 RUN apt-get -q update && env DEBIAN_FRONTEND=noninteractive apt-get -qy install --no-install-recommends bash curl make patch rsync default-jre-headless wget unzip