dnslookup: Update to 1.7.3

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
(cherry picked from commit 982903e0a3)

net/dnslookup/Makefile

@@ -5,12 +5,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dnslookup
-PKG_VERSION:=1.7.1
+PKG_VERSION:=1.7.3
 PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/ameshkov/dnslookup/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=21a6905cb6a5acea09d110f35b3c0720fc8019fff17bc47e00cff7e7ac03d560
+PKG_HASH:=c63d2dc8c357045e28f29ec716e3c20e39a2c1be4dc4313c6c2ab62838e5e2db
 
 PKG_MAINTAINER:=Tianling Shen <cnsztl@immortalwrt.org>
 PKG_LICENSE:=MIT