input: Write a python function to execute a Bash script and return its output.
  assert execute_bash_script("echo Hello World")=="Hello World\n"
  assert execute_bash_script("echo 12345")=="12345\n"
  assert execute_bash_script("echo 'Test Bash Script'")=="Test Bash Script\n"
output: def execute_bash_script(script):
      import subprocess
      result = subprocess.run(script, shell=True, capture_output=True, text=True)
      return result.stdout