Log Message:
syncthing: Update to 1.21.0

upstream changes:
-----------------
o v1.21.0
  Bugfixes:
    #8219: REST API: db/completion no output when one folder is paused
    #8479: Panic in failure reporting
  Enhancements:
    #1329: Add support for syncing ownership of files
    #7981: Show likely status of disconnected devices
    #8296: Auto-accepted receive-encrypted folders should have more sensible defaults
    #8323: Show internally used paths in the GUI for debugging
    #8448: Remove "restart on wakeup" functionality