Upgrade surefire to 2.20.1
Upgrade surefire to 2.20.1

Surefire 2.20.x improves debug output for build failures.
Let's give it a try.

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa