Merge branch 'stable-5.12'

* stable-5.12:
  Prepare 5.12.0-SNAPSHOT builds
  JGit v5.12.0.202105051250-m2

Change-Id: I88e0e3d341f375d6c85d532e4f010ac20f81c3d1
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>