Hello,
pgBackRest 2.46 has been released last week:
https://github.com/pgbackrest/pgbackrest/releases/tag/release%2F2.46
The SFTP support in this release requires an additional package:
libssh2-1-dev. See https://pgbackrest.org/user-guide.html#build.
Have you planned to update the packages?
Many thanks in advance!