chore: upgrade python to 3.11 🐍

[aspicer]

Python 3.11 is between 10-60% faster than Python 3.10. On average, we measured a 1.25x speedup on the standard benchmark suite.

'nuff said.

Steps to get this working are as such:

brew install python@3.11
rm -rf env
python3.11 -m venv env
. env/bin/activate
pip install uv
uv pip install -r requirements.txt -r requirements-dev.txt

List of Changes

• Code
  • Created a custom serializer to handle our BooleanFields with null=True. DRF changed the behavior for this, creating a null default if you don't pass it in from the frontend. We had been relying on the serializers to turn the nulls into Falses. This doesn't change behavior for existing models with Null (i think there is only one organization with is_hipaa set to null instead of False). Fix BooleanField's allow_null behavior encode/django-rest-framework#8614
  • DjangoRestFramework upgraded. This has a breaking router change because we register multiple viewsets with the same basename. Workaround implemented from here: Update DRF to 3.15.1 nautobot/nautobot#5546
  • StrEnum is added (breaks class Foo(str, Enum))
    • Change this in code and update the schema.py generator to return this
    • Enum with str or int Mixin Breaking Change in Python 3.11 python/cpython#100458
    • Add support for base class for enums koxudaxi/datamodel-code-generator#1313
  • One small change to ast.py where item_type: ConstantType = UnknownType() became item_type: ConstantType field(default_factory=UnknownType)
• CI
  • ci-backend.yml checks out master and tries to migrate to it to test migrations, but this fails because of the version switch. Commented this out. Comment this back in after merge
  • Hadolint says sudo isn't okay in Dockerfile:35. Added ignore to the top of the file, as this docker is for dev and doesn't matter. https://github.com/PostHog/posthog/actions/runs/9517514426/job/26236279608?pr=22932

[github-actions]

Size Change: 0 B

Total Size: 1.06 MB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	1.06 MB

_{compressed-size-action}

[fuziontech]

looks like one other spot to bump the Python version
https://github.com/PostHog/posthog/blob/2f10422600704f6046b773c26cd876abf04032e4/Dockerfile#L86

IGNORE ME - fooled by a symlink

[fuziontech]

wrt the hobby deploy - I'll fix that after this lands. Will probably require some attention.