chore(deps): update dependency backup_borg to v1.2.8-1.8.9-0

Author: renovate[bot]

requirements.yml

@@ -4,7 +4,7 @@
   version: v1.0.0-3
   name: auxiliary
 - src: git+https://gitlab.com/etke.cc/roles/backup_borg.git
-  version: v1.2.7-1.8.6-0
+  version: v1.2.8-1.8.9-0
   name: backup_borg
 - src: git+https://github.com/devture/com.devture.ansible.role.container_socket_proxy.git
   version: v0.1.1-3