Fix run.sh shebang (#4561)

Co-authored-by: Nicholas Tindle <nick@ntindle.com>
Co-authored-by: Reinier van der Leer <github@pwuts.nl>

run.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 function find_python_command() {
     if command -v python &> /dev/null
@@ -26,4 +26,4 @@ if $PYTHON_CMD -c "import sys; sys.exit(sys.version_info < (3, 10))"; then
     read -p "Press any key to continue..."
 else
     echo "Python 3.10 or higher is required to run Auto GPT."
-fi
+fi