git: 45916e7c91ce..66082b6c88b9 - vendor/expat - vendor branch updated

From: Xin LI <delphij_at_FreeBSD.org>
Date: Wed, 21 Sep 2022 06:53:28 UTC
The branch vendor/expat has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/log/?id=45916e7c91ce..66082b6c88b9

66082b6c88b9 Vendor import of expat 2.4.9.