dev-libs/expat: update to version 2.6.2

BUG=b/335668837
TEST=presubmit
RELEASE_NOTE=Updated dev-libs/expat to version 2.6.2. This fixed CVE-2024-28757.

Change-Id: I5988fa7523a4b3bcb0773b77f8c28816cb7c49b6
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/69990
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Anil Altinay <aaltinay@google.com>
Reviewed-by: Kevin Berry <kpberry@google.com>
2 files changed