whois: Update to version 5.5.23

whois: Update to version 5.5.23

- Update from version 5.5.21 to 5.5.23
- Update of rootfile not required
- Changelog
    5.5.23
	* Updated the .sc, .新加坡 (.xn--yfro4i67o, Singapore) and .சிங்கப்பூர்
	    (.xn--clchc0ea0b2g2a9gcd, Singapore) TLD servers.
    5.5.22
	* Fixed a segmentation fault with --no-recursion.
 	* Updated the .bm and .vi TLD servers.
 	* Removed 4 new gTLDs which are no longer active.

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