Revert "Upgrade backup-borg (v1.2.5-1.8.2-1 -> v1.2.5-1.8.2-2)"

This reverts commit fd6daf3d24.

Looks like v1.2.5-1.8.2-2 supposedly offers Postgres v16 support,
but does not work well with it and will need additional work.

requirements.yml

@@ -4,7 +4,7 @@
   version: v1.0.0-1
   name: auxiliary
 - src: git+https://gitlab.com/etke.cc/roles/backup_borg.git
-  version: v1.2.5-1.8.2-2
+  version: v1.2.5-1.8.2-1
 - src: git+https://github.com/devture/com.devture.ansible.role.container_socket_proxy.git
   version: v0.1.1-2
 - src: git+https://github.com/devture/com.devture.ansible.role.docker_sdk_for_python.git