Update deps to Kube 1.11.3

This updates the dependencies to Kube 1.11.3 to pull in a fix allowing
requestheader auth to be used without normal client auth (which makes
things work on clusters that don't enable client auth normally, like
EKS).

vendor/github.com/modern-go/reflect2/unsafe_struct.go

@@ -56,4 +56,4 @@ func (type2 *UnsafeStructType) FieldByNameFunc(match func(string) bool) StructFi
 		panic("field match condition not found in " + type2.Type.String())
 	}
 	return newUnsafeStructField(type2, structField)
-}
+}