/bin/bash replaced with /usr/bin/env bash to match other scripts

script/crossbinary-default

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 if ! test -e autogen/genstatic/gen.go; then

script/update-generated-crd-code.sh

@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
+set -e
 
 HACK_DIR="$( cd "$( dirname "${0}" )" && pwd -P)"; export HACK_DIR
 REPO_ROOT=${HACK_DIR}/..