ssh: Update to OpenSSH 9.7p1
This release contains mostly bugfixes.
It also makes support for the DSA signature algorithm a compile-time
option, with plans to disable it upstream later this year and remove
support entirely in 2025.
Full release notes at https://www.openssh.com/txt/release-9.7
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
(cherry picked from commit a91a246563dffa876a52f53a98de4af9fa364c52)
(cherry picked from commit 464fa66f639bdc8e340dd3f640af4309530d48ca)