Handle faulty response object when getting news.

[ericpien]

• Fixes: https://github.com/ranaroussi/yfinance/issues/2015
  • The trace provided in the issue shows the exception occurs due to trying to parse faulty response object JSONDecodeError: Expecting value: line 1 column 1 (char 0)
  • try except catches the error and returns empty set instead of raising the exception.
  • The error is logged and the API user sees empty list of news instead of the raised exception.
• Add check if returned value is None before accessing its text to avoid AttributeError

[ValueRaider]

Approved, just do a git squash #1084