nano: update to 4.3

Update nano to 4.3

Release notes at https://nano-editor.org/news.php

2019.06.18 - GNU nano 4.3
* The ability to read from and write to a FIFO has been regained.
* Startup time is reduced by fully parsing a syntax only when needed.
* Asking for help (^G) when using --operatingdir does not crash.
* The reading of a huge or slow file can be stopped with ^C.
* Cut, zap, and copy operations are undone separately when intermixed.
* M-D reports the correct number of lines (zero for an empty buffer).

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

utils/nano/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nano
-PKG_VERSION:=4.2
+PKG_VERSION:=4.3
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/nano
-PKG_HASH:=1143defce62e391b241252ffdb6e5c1ded56cfe26d46ee81b796abe0ccc45df9
+PKG_HASH:=00d3ad1a287a85b4bf83e5f06cedd0a9f880413682bebd52b4b1e2af8cfc0d81
 
 PKG_LICENSE:=GPL-3.0+
 PKG_LICENSE_FILES:=COPYING