golang: update to version 1.12.4

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

lang/golang/golang-version.mk

@@ -11,4 +11,4 @@ endif
 
 
 GO_VERSION_MAJOR_MINOR:=1.12
-GO_VERSION_PATCH:=3
+GO_VERSION_PATCH:=4

lang/golang/golang/Makefile

@@ -18,7 +18,7 @@ GO_SOURCE_URLS:=https://dl.google.com/go/ \
 
 PKG_SOURCE:=go$(PKG_VERSION).src.tar.gz
 PKG_SOURCE_URL:=$(GO_SOURCE_URLS)
-PKG_HASH:=5c507abe8818429d74ebb650a4155d36bc3f9a725e59e76f5d6aca9690be2373
+PKG_HASH:=4affc3e610cd8182c47abbc5b0c0e4e3c6a2b945b55aaa2ba952964ad9df1467
 
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE