Upgrade Python Version from 3.9 to 3.11

.github/workflows/django-tests.yml

@@ -27,7 +27,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: 3.11
     - name: Install Dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/mypy.yml

@@ -13,10 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.9
+    - name: Set up Python 3.11
       uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: 3.11
     - name: Install Dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/pylint.yml

@@ -13,10 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.9
+    - name: Set up Python 3.11
       uses: actions/setup-python@v4
       with:
-        python-version: 3.9
+        python-version: 3.11
     - name: Install Dependencies
       run: |
         python -m pip install --upgrade pip

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.9
+FROM python:3.11
 
 ENV PYTHONUNBUFFERED 1
 

dev-tools/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.9-bookworm
+FROM python:3.11-bookworm
 WORKDIR /app/dev-tools
 
 ENV PATH="/app/dev-tools/node_modules/.bin:$PATH"