fix: avoid using `asyncio.get_event_loop`

[ricky8955555]

Description

Please carefully read the Contributing note and Code of conduct before making any pull requests. And, Do not make a pull request to merge into master unless it is a hotfix. Use the development branch instead.

Issues fixed by this PR

41

The behaviour of creating a new event loop if one doesn't already exist was removed in Python 3.12 alpha and was allegedly deprecated before then.

The get_event_loop() method of the default event loop policy now emits a DeprecationWarning if there is no current event loop set and it decides to create one. (Contributed by Serhiy Storchaka and Guido van Rossum in gh-100160.)

(see https://docs.python.org/3.12/whatsnew/3.12.html#deprecated)

Type of changes

• [x] Bug fix
• [ ] New feature
• [ ] Enhancement
• [ ] Documentation

Checklist:

• [x] My code follows the style guidelines of this project
• [x] My pull request is unique and no other pull requests have been opened for these changes
• [x] I have read the Contributing note and Code of conduct
• [x] I am responsible for any copyright issues with my code if it occurs in the future.