Improving testing of release process

I propose we allow suffixing the version number from an environment variable. This would then be utilized in our test release process to build the package with a unique version number.

The new action would run on the following events:

• A tag is pushed (same as today)
• Once a month
• A workflow_dispatch with a unique iteration value

There is more information on how this would be implemented here: https://github.com/django-commons/best-practices/blob/main/docs/releases.md

The relevant bits of code from the best practices:

• https://github.com/django-commons/best-practices/blob/main/pyproject.toml#L24 Identifies what version should be used. This may be different since I think we use hatchling
• https://github.com/django-commons/best-practices/blob/main/src/django_commons_best_practices/__init__.py#L8 Reads the environment variable in to suffix the version if necessary.
• https://github.com/django-commons/best-practices/blob/main/.github/workflows/test_release.yml#L25-L54 Generates the suffix if needed
• https://github.com/django-commons/best-practices/blob/main/.github/workflows/test_release.yml#L72-L74 Generates the package name to be uploaded