Use bumpversion for epidata client

rzats commented 1 month ago

Closes #1431.

Summary:

Updates the versioning in the Python client to the same method used in the JS and R clients. With this method, the version is set to a simple hardcoded string; however, during a new Delphi release, GitHub Actions will run bump2version during the release process and automatically update this string in the code.

This can be replicated in a local environment; the following code should bump the version in the Python client (as well as the .bumpversion.cfg file itself, and 7 other files) to 4.1.21:

python3 -m pip install bump2version
bump2version --current-version 4.1.20 patch

Prerequisites:

[x] Unless it is a documentation hotfix it should be merged against the dev branch
[x] Branch is up-to-date with the branch to be merged with, i.e. dev
[x] Build is successful
[x] Code is cleaned up and formatted