input: Write a python function to retrieve JSON data from a URL and return it.
  assert retrieve_json_data('http://example.com/data.json') == {'key': 'value'}
  assert retrieve_json_data('http://anotherexample.com/data') == {'another_key': 'another_value'}
  assert retrieve_json_data('http://yetanotherexample.com/info') == {'info_key': 'info_value'}
output: import requests
  
  def retrieve_json_data(url):
      response = requests.get(url)
      return response.json()