git: 280d433d4c13..f3f5af331c74 - vendor/zlib - vendor branch updated

From: Xin LI <delphij_at_FreeBSD.org>
Date: Tue, 13 Oct 2026 05:48:32 UTC
The branch vendor/zlib has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/log/?id=280d433d4c13..f3f5af331c74

f3f5af331c74 Fix buffer overflow bug in non-blocking gzwrite.