Update syncthing to version 1.23.6 / rev 137 via SR 1096702
    
    https://build.opensuse.org/request/show/1096702
    by user mkittler + dimstar_suse
    - Update to 1.13.6
      * Bugfixes:
        #7638: favicon not working Firefox & derivative browsers
        #8899: Omitting %s from LDAP bind DN sends corrupted bind DN string to LDAP server
        #8920: Untrusted device should be disallowed from being an introducer
        #8960: relaysrv and discosrv docker images haven't been updated for more than year