Update go-sendxmpp to version 0.6.0 / rev 6 via SR 1096417
    
    https://build.opensuse.org/request/show/1096417
    by user jubalh + dimstar_suse
    - Update to 0.6.0:
      Added:
      * Add support for sending Out of Band Data (OOB).
      * Add SCRAM-SHA-1, SCRAM-SHA-256 and SCRAM-SHA512 support (via go-xmpp commit bef3e54).
      * Add support for messages of type headline.
      Changed:
      * Print --help output to stdout instead of stderr.
      * Print sent stanzas when --debug is used (via go-xmpp commit 9129a110df1b).
      * Allow JIDs without localpart.
      * Use single quotes for attributes in stanzas created by github.com/beevik/etree (vial etree v1.1.4).
      * Fix SRV lookup when the domain has a CNAME (via xmppsrv v0.2.5).
      * Fall back to directTLS on port 5223 (instead of StartTLS on port 5222)
        if no SRV records are provided and -t is set.
      * Remove trailing newlines in interactive mode.