fix: [rsync-backup-target] prevent error on ``init`` for missing file

rsync-backup-target/hooks/init

@@ -51,8 +51,8 @@ rebuild-config() {
         done < <(echo "$keys" | shyaml get-values-0) | file_put "$host_path_key/$ident/.ssh/authorized_keys"
     done < <(echo "$admin_keys" | shyaml -y key-values-0)
 
+    mkdir -p "${CONTROL_USERS_FILE%/*}" || return 1
     e "$control_users" > "$CONTROL_USERS_FILE"
-
 }
 
 local_path_key=/etc/rsync/keys/admin