Switched to Python 3.12

Author: bmispelon

.github/workflows/tests.yml

@@ -15,26 +15,26 @@ permissions:
 
 jobs:
   noshadows:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.8'
+          python-version: '3.12'
       - run: pip install "tinycss2>=1.2.0"
       - run: python noshadows.py --tests
         env:
           PYTHONWARNINGS: error
 
   tracdjangoplugin:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.8'
+          python-version: '3.12'
       - name: Install requirements
         run: python -m pip install -r requirements.txt
       - name: Run tests
@@ -44,13 +44,13 @@ jobs:
           PYTHONWARNINGS: error
 
   traccheck:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.8'
+          python-version: '3.12'
       - name: Install requirements
         run: python -m pip install -r requirements.txt
       - run: python traccheck.py lint trac-env/

Dockerfile

@@ -1,5 +1,5 @@
 # pull official base image
-FROM python:3.8-slim-bullseye
+FROM python:3.12-slim-bookworm
 
 # set work directory
 WORKDIR /code