upgrade openssh-server package from v9.0_p1-r1 to v9.0_p1-r2

https://git.alpinelinux.org/aports/commit/main/openssh?h=3.16-stable&id=3fe7634e33d647a7c20f21e80c5fe0d4a1efe164

https://github.com/fphammerle/docker-sftpd/commit/0219831ba905bdd2feee4adbaec9aa2a86302648

Dockerfile

@@ -1,7 +1,7 @@
 FROM docker.io/alpine:3.16.1
 
 ARG BORGBACKUP_PACKAGE_VERSION=1.2.0-r0
-ARG OPENSSH_SERVER_PACKAGE_VERSION=9.0_p1-r1
+ARG OPENSSH_SERVER_PACKAGE_VERSION=9.0_p1-r2
 ARG TINI_PACKAGE_VERSION=0.19.0-r0
 ARG USER=borg
 ENV SSHD_HOST_KEYS_DIR=/etc/ssh/host_keys