Currently the user has to either:
(a) not specify a Python version (in which case they get the default)
(b) specify an exact version (such as 3.10.5)

In order to make it easier for users to keep on an up to date Python release, it would be helpful if we also supported specifying just a major version (eg 3.11), which the buildpack would automatically map back to the latest patch release.

See also:

• Support the .python-version file #6
• Support flexible patch version syntax to allow for automatic Python updates heroku-buildpack-python#913

GUS-W-11475071.