Bump jetty from 6.1.9 to 6.1.23

Bumps jetty from 6.1.9 to 6.1.23.

---
updated-dependencies:
- dependency-name: org.mortbay.jetty:jetty
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
1 file changed