[Bug]: News docs suggest no API key is needed but fails assertion when api_key missing

[goshlanguage]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When I run the code sample under Querying News Data from the PyPi docs page, it fails because no api_key or secret_key is supplied, despite the comment reading # no keys required for news data:

from alpaca.data.historical.news import NewsClient
from alpaca.data.requests import NewsRequest
from datetime import datetime

# no keys required for news data
client = NewsClient()

request_params = NewsRequest(
                        symbols="TSLA",
                        start=datetime.strptime("2022-07-01", '%Y-%m-%d')
                        )

news = client.get_news(request_params)

# convert to dataframe
news.df

results in the following stack trace:

  File "/path/to/src.py", line 6, in <module>
    client = NewsClient()
  File "/path/to/venv/lib/python3.13/site-packages/alpaca/data/historical/news.py", line 38, in __init__
    super().__init__(
    ~~~~~~~~~~~~~~~~^
        api_key=api_key,
        ^^^^^^^^^^^^^^^^
    ...<6 lines>...
        raw_data=raw_data,
        ^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/path/to/venv/lib/python3.13/site-packages/alpaca/common/rest.py", line 61, in __init__
    self._api_key, self._secret_key, self._oauth_token = self._validate_credentials(
                                                         ~~~~~~~~~~~~~~~~~~~~~~~~~~^
        api_key=api_key, secret_key=secret_key, oauth_token=oauth_token
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/path/to/venv/lib/python3.13/site-packages/alpaca/common/rest.py", line 354, in _validate_credentials
    raise ValueError("You must supply a method of authentication")
ValueError: You must supply a method of authentication

Expected Behavior

The code snippet should be a functional example

SDK Version I encountered this issue in

alpaca-py-0.40.1

Steps To Reproduce

`pip install alpaca-py`
copy and paste snippet from [pypi docs](https://pypi.org/project/alpaca-py/#data-api-example)
run the code

Filled out the Steps to Reproduce section?

• I have entered valid steps to reproduce my issue or have attached a minimally reproducible case in code that shows my issue happening; and understand that without this my issue will be flagged as invalid and closed after 30 days.

Anything else?