Update bind to version 9.18.20 / rev 203 via SR 1126943
    
    https://build.opensuse.org/request/show/1126943
    by user jcronenberg + anag+factory
    - Update to release 9.18.20
      Feature Changes:
      * The IP addresses for B.ROOT-SERVERS.NET have been updated to
        170.247.170.2 and 2801:1b8:10::b.
      Bug Fixes:
      * If the unsigned version of an inline-signed zone contained
        DNSSEC records, it was incorrectly scheduled for resigning.
        This has been fixed.
      * Looking up stale data from the cache did not take local
        authoritative data into account. This has been fixed.
      * An assertion failure was triggered when lock-file was used at
        the same time as the named -X command-line option. This has
        been fixed.
      * The lock-file file was being removed when it should not have
        been, making the statement ineffective when named was started
        three or more times. This has been fixed.
    - Disable SLP by default for Factory and ALP