Revert "component/libxml2: version up 2.9.14, including security fixes."

This reverts commit 47e7c362.
1 job for feature/kvm-external-disk (queued for 1 second)
Status Job ID Name Coverage
  External
running SlapOS.SoftwareReleases.IntegrationTest-py3-luke/feature/kvm-external-disk

21074:19:08