dev-libs/libxml2: upgraded package to 2.9.13-r1

BUG=b/223552672,b/223552824,b/223552601,b/223552669,b/223552657
TEST=presubmit
RELEASE_NOTE=Upgraded dev-libs/libxml2 to 2.9.13-r1. This resolves
CVE-2022-23308.

Change-Id: I1e10f5d5d54cdbc152353e3fd65426fbd3bfc706
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/31455
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
2 files changed