replace #!/bin/bash with #!/usr/bin/env bash

resources/scripts/build/payload/grub

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #   generate GRUB ELF files (coreboot payload) and configuration files
 #

resources/scripts/build/payload/seabios

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #  helper script: builds SeaBIOS source code
 #

resources/scripts/build/payload/tianocore

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #  helper script: builds Tianocore source code
 #