git: 28bb687ea813..ef5aa86648f5 - vendor/expat - vendor branch updated

From: Philip Paeps <philip_at_FreeBSD.org>
Date: Mon, 10 Aug 2026 23:26:48 UTC
The branch vendor/expat has been updated by philip:

URL: https://cgit.FreeBSD.org/src/log/?id=28bb687ea813..ef5aa86648f5

ef5aa86648f5 Vendor import of expat 2.8.3