libnpupnp: update to 4.1.5

Add libmicrohttpd to PKG_BUILD_DEPENDS as it doesn't get added for some
reason.

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

libs/libnpupnp/Makefile

@@ -1,12 +1,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libnpupnp
-PKG_VERSION:=4.1.4
+PKG_VERSION:=4.1.5
 PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://www.lesbonscomptes.com/upmpdcli/downloads
-PKG_HASH:=03506f02546e3b3d31b389e046c4691f020b82d315426ce79f1e2b1eb7958656
+PKG_HASH:=566f5895376a14aa87997de7ce3454595646613d1d0af34d05c31f6d9fe884a9
 
 PKG_MAINTAINER:=
 PKG_LICENSE:=LGPL-2.1-or-later
@@ -14,6 +14,7 @@ PKG_LICENSE_FILES:=COPYING
 
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
+PKG_BUILD_DEPENDS:=libmicrohttpd
 
 include $(INCLUDE_DIR)/package.mk