Bump apache-karaf from 2.3.4 to 4.3.8 in /parent

Bumps apache-karaf from 2.3.4 to 4.3.8.

---
updated-dependencies:
- dependency-name: org.apache.karaf:apache-karaf
  dependency-type: direct:production
...

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