libnpupnp: update to 4.2.1

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/libnpupnp/Makefile

@@ -1,12 +1,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libnpupnp
-PKG_VERSION:=4.1.5
+PKG_VERSION:=4.2.1
 PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://www.lesbonscomptes.com/upmpdcli/downloads
-PKG_HASH:=566f5895376a14aa87997de7ce3454595646613d1d0af34d05c31f6d9fe884a9
+PKG_HASH:=e0e59eb2d3d024e827050428e0e7eb228355912a38c85eb30bfeb2f0926eca4c
 
 PKG_MAINTAINER:=
 PKG_LICENSE:=LGPL-2.1-or-later