whois: Update to version 5.6.1

whois: Update to version 5.6.1

- Update from version 5.5.23 to 5.6.1
- Update of rootfile not required
- Changelog
    5.6.1
	  * Added the .pg TLD server.
	  * Updated the .gov, .mu, .中国 (.xn--fiqs8s) and .中國 (.xn--fiqz9s)
	    TLD servers.
	  * Removed the .jobs TLD server.
	  * Added the encodings for whois.afrinic.net and whois.apnic.net.
	  * Enabled the UTF-8 encoding for whois.ripe.net.
	  * Use the last ReferralServer returned by the ARIN server instead of
	    the first, because we want to follow the referral for the most
	    specific record returned.
	  * Make sure to avoid trivial referral loops.
    5.6.0
	  * Fixed the mangling of RADB queries with commands.
	  * Implemented the parsing of more variants of ARIN's ReferralServer
	    field.
	  * Implemented following the APNIC pseudo-referrals.
	  * Added the .ad and .za TLD servers.
	  * Updated the .ao, .bz, .gi, .gq, .gr, .gw, .lc, .md, .pn, .pr, .uy, .vc,
	    .info, .mobi, .ελ (.xn--qxam, Greece) and .გე (.xn--node, Georgia) TLD
	    servers.
	  * Added 2410::/12.
	  * Removed 7 new gTLDs which are no longer active.
	  * Cleaned up the markup of the man pages, courtesy of Bjarni Ingi
	    Gislason. (Closes: #1036826, #1094208)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>