feat!: Python 3.12 Upgrade

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04]
-        python-version: ['3.8', '3.12']
+        python-version: ['3.12']
         toxenv: [django42]
     steps:
     - uses: actions/checkout@v3

.github/workflows/mysql8-check-migrations.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-20.04 ]
-        python-version: [ 3.8 ]
+        python-version: [ 3.12 ]
 
     steps:
     - name: Checkout repo

.github/workflows/upgrade-python-requirements.yml

@@ -15,7 +15,7 @@ jobs:
     uses: openedx/.github/.github/workflows/upgrade-python-requirements.yml@master
     with:
       branch: ${{ github.event.inputs.branch || 'master' }}
-      python_version: "3.8"
+      python_version: "3.12"
       # optional parameters below; fill in if you'd like github or email notifications
       # user_reviewers: ""
       # team_reviewers: ""

requirements/constraints.txt

@@ -46,9 +46,5 @@ wrapt < 1.14.0
 # At the time of adding this, the moto version 4.1.9 requires urllib3<1.27,>=1.25.4
 urllib3<1.27,>=1.25.4
 
-# backports.zoneinfo needed for Python 3.12 + Django 4.2 compatibility
-# Can be removed once requirements have been upgraded with Python>=3.9
-backports.zoneinfo; python_version<'3.9'
-
 # path>16.14.0 has removed the deprecated abspath function, which is breaking the docs build
 path<16.15.0

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{38, 312}-django{42}
+envlist = py{312}-django{42}
 skipsdist = true
 
 [testenv]