update runc binary to v1.0.3

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

hack/dockerfile/install/runc.installer

@@ -9,7 +9,7 @@ set -e
 # the containerd project first, and update both after that is merged.
 #
 # When updating RUNC_VERSION, consider updating runc in vendor.conf accordingly
-: "${RUNC_VERSION:=v1.0.2}"
+: "${RUNC_VERSION:=v1.0.3}"
 
 install_runc() {
 	RUNC_BUILDTAGS="${RUNC_BUILDTAGS:-"seccomp"}"