upgrade alpine base image from v3.18.5 to v3.19.0 including upgrade of openssh-server package from v9.3_p2-r0 to v9.5_p1-r0
https://web.archive.org/web/20231210091052/https://www.openssh.com/releasenotes.html
https://git.alpinelinux.org/aports/commit/main/openssh?h=3.19-stable&id=21bade7d6ca12085531e54541460c5cfb09178e9
https://git.alpinelinux.org/aports/commit/main/openssh?h=3.19-stable&id=4b4cd657e5458d9d5ae42ae5bfc97d55aaa9e85a
https://git.alpinelinux.org/aports/commit/main/openssh?h=3.19-stable&id=a78e32f046f4a4b20834cd964b3d834746376315
https://git.alpinelinux.org/aports/commit/main/openssh?h=3.19-stable&id=978509f17cd81f4b819dadb4d835133b47ee878e
https://github.com/fphammerle/docker-borgbackup-sshd/commit/357efb2adf1c5352d90d01d1ed6e9d409151d898