Merge branch 'renovate/rocketchat-rocket.chat-5.x' into 'master'

chore(deps): update dependency rocketchat/rocket.chat to v5.4.8

See merge request !8

.gitlab-ci.yml

 variables:
   DOCKER_HUB_REPO: libresh/rocketchat
-  VERSION: 5.4.3
+  VERSION: 5.4.8
 
 test:
   stage: test