package/ncurses: bump version to 6.4.20230603

Release notes:
https://github.com/ThomasDickey/ncurses-snapshots/blob/master/NEWS

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ncurses/ncurses.hash

@@ -1,4 +1,4 @@
 # Locally calculated
-sha256  004603a9b3ec51599ef0a0089482004ee3d33b0240d87ce17b6f77525b51fb4e  ncurses-6.4-20230429.tar.gz
+sha256  b0910671694c2c8377f579eea68477a15d67bd20ddd4b29328cfe15c62c7b3fd  ncurses-6.4-20230603.tar.gz
 # Locally computed
 sha256  0413b2f4ea863194c174673032f0fca84f1ea1ed4eed6476baea68c075a631ce  COPYING

package/ncurses/ncurses.mk

@@ -6,7 +6,7 @@
 
 # When there is no snapshost yet for a new version, set it to the empty string
 NCURSES_VERSION_MAJOR = 6.4
-NCURSES_SNAPSHOT_DATE = 20230429
+NCURSES_SNAPSHOT_DATE = 20230603
 NCURSES_VERSION = $(NCURSES_VERSION_MAJOR)$(if $(NCURSES_SNAPSHOT_DATE),-$(NCURSES_SNAPSHOT_DATE))
 NCURSES_VERSION_GIT = $(subst .,_,$(subst -,_,$(NCURSES_VERSION)))
 NCURSES_SITE = $(call github,ThomasDickey,ncurses-snapshots,v$(NCURSES_VERSION_GIT))