use env in shell scripts

Signed-off-by: Leah Rowe <leah@libreboot.org>

.gitcheck

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
 # SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
 # SPDX-License-Identifier: GPL-3.0-only

blobutil

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
 # SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
 # SPDX-License-Identifier: GPL-3.0-only

build

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 #  generic build script, for building components (all of them)
 #

download

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 # Generic script for downloading programs used by the build system
 #

modify

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 #  generic scripts for modifying configs and such
 #

update

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 #  generic update scripts for updating configs and such
 #