Update mockito and its dependencies to latest version available in
Orbit:
- mockito 2.13.0.v20180426-1843
- net.bytebuddy.byte-buddy 1.7.9.v20180420-1519
- net.bytebuddy.byte-buddy-agent 1.7.9.v20180420-1519
- org.objenesis 2.6.0.v20180420-1519
CQ: 18301
CQ: 18303
CQ: 18319
Change-Id: I3dd01e5b0b5a023fcb6530e8ec76729cfc41d735
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>