dev-libs/libxml2: update to 2.11.7

BUG=b/325093725
TEST=presubmit
RELEASE_NOTE=Updated dev-libs/libxml2 to 2.11.7. This fixes CVE-2024-25062.

cos-patch: security-high
Change-Id: I499b1e6f753ece029b83589b7298e7a0e1001f58
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/64992
Reviewed-by: Anil Altinay <aaltinay@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
3 files changed