Upgrade admin to Python 3.12

[sastels]

Description

As a software developer working on GCNotify stack,
I want the Python stack to be upgraded at latest supported version,
So that I can leverage the latest features of the language and better/safer code.

As a system ops working on GCNotify stack,
I want the Python stack to be upgraded at latest supported version,
So that I can leverage the latest performance improvement
And process notifications faster.

WHY are we building?

To get latest performance improvements, features and security updates of the Python language/runtime.

WHAT are we building?

Upgrade the stack to the latest possible version of Python. A few considerations:

• It is possible that we cannot upgrade to the latest of the latest (3.12 at the time of this writing for the stable version), as this might be blocked by a dependency library that did not release a version supporting the latest. For example, we might have to upgrade from version 3.10 to version 3.11, and wait a bit longer to migrate to version 3.12.
• The lambdas might have additional considerations that might limit the possible maximum Python version we can use, such as supported runtime and also monitoring libraries that need to support that environment (such as New Relic). Consider doing this work in Upgrade lambda and New Relic to latest supported version #354 .

VALUE created by our solution

Better performance, security and reliability.

Acceptance Criteria

• Admin running on Python 3.12.
• test locally
• test on dev
• document in tricks and tips how we can deploy branches to dev

QA Steps

• poke around in admin

[sastels]

• Upgraded to 3.12.7 Chore/python 3.12 upgrade notification-admin#1996
• found a few tests that fail with Python 3.12.7 :/ Working through them...

[jimleroyer]

There are some tests to fixed, following the upgrade to Python 3.12 and due to its stricter type check. Steve is on a quest to fix these.

[sastels]

all tests passing locally and in CI

[sastels]

Working locally (devcontainer) with other apps.

[sastels]

Ready for review
cds-snc/notification-admin#1996

[P0NDER0SA]

Pond will review

[P0NDER0SA]

Looks ok! Steve can merge this and move to QA

[sastels]

in staging, looks good

[P0NDER0SA]

QA'ed!!