use /usr/bin/env for find bash to improve portability

script/add-action.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

script/add-ignore-tags.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

script/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Usage: script/build.sh
 

script/create-pull-request.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 set -x

script/internal/check-git.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 # Lowest version tested against :)
 expected_major=2

script/internal/check-node.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [ -z "$(which node || exit 0)" ]; then
   echo "Unable to find 'node' in the PATH"

script/internal/generate-scripts.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

script/internal/set-trace.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
 GITHUB_ACTIONS_DEBUG="$(echo "$GITHUB_ACTIONS_DEBUG" | tr a-z A-Z)"
 if [ "$GITHUB_ACTIONS_DEBUG" = 'TRUE' -o "$GITHUB_ACTIONS_DEBUG" = '1' ]; then

script/test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Usage: script/test.sh ./_layout/action-versions.[tar.gz|zip]
 #        Verify the archive is well-formed with an action.[yaml|yml]

script/update-action.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

script/verify-no-unstaged-changes.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 set -x