feat: upgrade to Python 3.12

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.8", "3.12"]
+        python-version: ["3.12"]
         os: [ubuntu-20.04]
         toxenv: [django42]
         node: [16]
@@ -89,7 +89,7 @@ jobs:
           TOXENV: ${{ env.FORMATTED_PYTHON_VERSION }}-${{ matrix.toxenv }}
           TARGETS: "requirements.js static test_python"
       - name: Run coverage
-        if: matrix.python-version == '3.8' && matrix.toxenv == 'django42'
+        if: matrix.python-version == '3.12' && matrix.toxenv == 'django42'
         uses: py-cov-action/python-coverage-comment-action@v3
         with:
           GITHUB_TOKEN: ${{ github.token }}

.github/workflows/mysql-migrations.yml

@@ -14,7 +14,7 @@ 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: ""

Dockerfile

@@ -2,7 +2,7 @@ FROM ubuntu:focal as app
 
 ENV DEBIAN_FRONTEND noninteractive
 
-ARG PYTHON_VERSION=3.8
+ARG PYTHON_VERSION=3.12
 
 # Packages installed:
 

tox.ini

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