Dependency on Python 3.12 not stated in environment.yml

[davidosterberg]

Library no longer works with Python 3.11. This is the default python in for example Debian 12.

1. typing.overide was added in 3.12 (https://peps.python.org/pep-0698/) is it intentional to break the library because of a typing feature. Seems like the benefits do not justify the inconvenience to users
2. environment.yml does not state the dependency, so the library will download fine, but will be broken.

[lassebje]

@davidosterberg This is already being adressed in this pull request #45. It was a mistake to rely on python 12+ specific syntax. This should have been caught by the CI-system.

[lassebje]

Suggest to won't fix this issue now as the override annotations has been removed in main.