Use /usr/bin/env bash instead of /bin/bash

Some systems do not have bash in /bin, e.g., Nix-based setups.

run-ci-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 case $TEST_TYPE in

run-integration-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 ./run src/examples/zkapps/hello_world/run.ts --bundle

run-jest-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 shopt -s globstar # to expand '**' into nested directories
 

run-mina-integration-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 node tests/integration/simple-zkapp-mock-apply.js

run-minimal-mina-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 ./run src/tests/inductive-proofs-small.ts --bundle

run-unit-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 shopt -s globstar # to expand '**' into nested directories./
 

src/mina-signer/build-cjs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 cp index.cjs dist/node/mina-signer/index.cjs

src/mina-signer/build-web.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 tsc -p ../../tsconfig.mina-signer-web.json