python upgrade updates

[samathad2023]

Description

This is Draft PR aims to upgrade project to python version 3.12.2.This PR encompasses changes in dependencies, configurations and code modifications to ensure compatibility with Python 3.12.2 .This commit is used to test the Admin and API.

This should include:

install Python 3.12 via pyenv pyenv install 3.12
Create the new virtual environment against 3.12
cd notifications-api pyenv virtualenv 3.12 notify-api-upgrade pyenv local notify-utils-upgrade
Update the project to use the new virtual env that is 3.12-based (in the project root directory, pyenv local notify-api-upgrade )
Run make bootstrap to install the dependencies in the new virtual env

[xlorepdarkhelm]

LGTM

[xlorepdarkhelm]

In app/enums.py, the import for StrEnum can be changed and the dependency on the strenum can be removed with the conversion to Python 3.12.

[xlorepdarkhelm]

Made a note below. Nothing major, just cleanup work. I'll mark it as approved, just please remove those comments.

[xlorepdarkhelm]

It was supposed to mark as approved, but decided to say there were changes requested.

[ccostino]

Thank you, @samathad2023! 🎉