added external api to replace failing api

[shivamshan]

Signed-off-by: Shivam Shandilya [email protected]

Summary

This PR replaces the failing University API with a working API that uses https and returns names of cities.

• the cities of a particular country can be returned
• this configuration can make the exercise more subjective for the users
• modified pytest file of Hangman exercise to accommodate for new API
• updated the concerning cassette

This PR thus closes #197

Checklist

• [x] Variables, functions and comments are translated to Spanish
• [x] Functions follow underscore notation
• [x] Spell check done & typos fixed
• [x] All python code is PEP8 compliant
• [x] Test coverage with Playwright implemented; locators are Python code
• [x] Reviewers assigned (all peers & at least 1 mentor)

Screenshot

[shivamshan]

@reingart Hi, could you review this PR and suggest any changes if required?? Concerned Issue:- #197