Merge branch 'stable-5.4' into stable-5.5

* stable-5.4:
  Prepare 5.3.8-SNAPSHOT builds
  JGit v5.3.7.202002110540-r
  Prepare 5.1.14-SNAPSHOT builds
  JGit v5.1.13.202002110435-r

Change-Id: I44b39161f775a52795f6bff312a27227e893651e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>