Revert "tools/coreutils: update to 9.6"

This reverts commit 160e0b7ad8.

It seems that this was not tested on MacOS and will fail to compile,
so revert it until a proper update is done.

Fixes: 160e0b7ad8 ("tools/coreutils: update to 9.6")
Signed-off-by: Robert Marko <robimarko@gmail.com>

tools/coreutils/Makefile

@@ -8,11 +8,11 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=coreutils
 PKG_CPE_ID:=cpe:/a:gnu:coreutils
-PKG_VERSION:=9.6
+PKG_VERSION:=9.5
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@GNU/coreutils
-PKG_HASH:=7a0124327b398fd9eb1a6abde583389821422c744ffa10734b24f557610d3283
+PKG_HASH:=767ae6a22950ec42f3ba5f7c1de79dd27800ee8e9b8642da5dedb5974a1741e5
 
 HOST_BUILD_PARALLEL := 1