Bump xercesImpl from 2.9.1 to 2.12.2 in /testing/itest/builder

Bumps xercesImpl from 2.9.1 to 2.12.2.

---
updated-dependencies:
- dependency-name: xerces:xercesImpl
  dependency-type: direct:development
...

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