Upgrade python version to 3.12 +

[jamshale]

We want the next release to run on a long term supported python version such as 3.12 or possibly 3.13. This involves upgrading the python version in pyproject.toml and the lock file and manually testing. Making sure the integration tests run on the new version and that the full suite of @Release tests pass. Also all demos and documentation will need to be upgraded.

Plugin demos and integration tests will need to be upgraded in the plugin repo after this is completed.