chore(garage): optimize rclone flags for backup

garage/backup/resources/cronjob.yaml

@@ -23,7 +23,15 @@ spec:
               do
                   if [ -z "$bucket" ]; then exit 0; fi
                   echo "Syncing bucket $bucket";
-                  rclone sync -P --update --no-update-modtime --no-update-dir-modtime --ignore-errors -v "garage:$bucket" "storagebox:garage/$bucket/";
+                  rclone sync -P \
+                    --update \
+                    --checksum \
+                    --no-traverse \
+                    --no-update-modtime \
+                    --no-update-dir-modtime \
+                    --ignore-errors \
+                    -v \
+                    "garage:$bucket" "storagebox:garage/$bucket/";
               done
             volumeMounts:
             - name: rclone-config