Change borg backup service file to type=simple

roles/matrix-backup-borg/templates/systemd/matrix-backup-borg.service.j2

@@ -11,7 +11,7 @@ Wants={{ service }}
 DefaultDependencies=no
 
 [Service]
-Type=oneshot
+Type=simple
 Environment="HOME={{ matrix_systemd_unit_home_path }}"
 ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-backup-borg 2>/dev/null || true'
 ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-backup-borg 2>/dev/null || true'