go-ethereum: Update to 1.8.18

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

net/geth/Makefile

@@ -11,12 +11,12 @@ PKG_LICENSE:=ASL-2.0
 PKG_MAINTAINER:=Mislav Novakovic <mislav.novakovic@sartura.hr>
 
 PKG_NAME:=go-ethereum
-PKG_VERSION:=1.8.15
+PKG_VERSION:=1.8.18
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/ethereum/go-ethereum/tar.gz/v${PKG_VERSION}?
-PKG_HASH:=5081f21ab53f7eb9b84dbed32c4b58bb1c59a61163a6efaa0e4a8de764177c62
+PKG_HASH:=cbab18a733298830c9ed1e19c1ece37edf417fd55ec8f198803048ecc3ffa0b9
 
 PKG_BUILD_DEPENDS:=golang/host
 PKG_BUILD_PARALLEL:=1