[CR][ENG-5681] Great Big Python Upgrade

[felliott]

Purpose

Double our pythons, Lacoön-style, by bumping from py3.6 to py3.12. Much dependency upgrades included!

Changes

• Bump base python version from py3.6 to py3.12.
• Switch to using poetry for dependency management
• Bump most (not all) dependencies to their maximum version as of mid-March.
• Significantly update Dockerfile
• Upgrade Django to v4.2
• Generate test summary reports in CI
• 1240 files changed, 23012 insertions(+), 22362 deletions(-)
  • bulk of changes include: updates to f-strings, switching to basic asserts, tidying constructors, removing future

QA Notes

Full QA regression required, alongside selenium runs

Documentation

• Invoke v0.20.0 started converting underscores in task names to hyphens. invoke test_addons_api is now invoke test-addons-api when called on the command line.

Side Effects

None whatsoever.

Ticket

This ticket: https://openscience.atlassian.net/browse/ENG-5681 Epic link: https://openscience.atlassian.net/browse/ENG-4145