Bump openjpa in /openejb/examples/multi-jpa-provider-testing

Bumps openjpa from 2.2.0 to 2.2.2.

---
updated-dependencies:
- dependency-name: org.apache.openjpa:openjpa
  dependency-type: direct:development
...

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