Fixes: #3944 Authentication error; use tokens instead (#3949)

* fixes #3944 authentication error
* Fixes: #3944 authentication error
* Fixed docstring failure in pre-commit, Fixed request.get params to GitHub REST API standards
* run black formatter
* Add USER_TOKEN constant and checks if empty, removes deprecated docstring
* Add descriptive dict type hint, change headers format to f-string
* Add Accept header
* Fix pre-commit error
* Fix pre-commit error
* Add test for fetch_github_info
* Remove test function from main file
* Create test_fetch_github_info.py
* Update test_fetch_github_info.py
* Update test_fetch_github_info.py
* No need to cover __name__ == __main__ block

Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>