git: e3c0f2f39909..28bb687ea813 - vendor/expat - vendor branch updated

[Philip Paeps]

The branch vendor/expat has been updated by philip:

URL: https://cgit.FreeBSD.org/src/log/?id=e3c0f2f39909..28bb687ea813

28bb687ea813 Vendor import of expat 2.8.2