build: add python3.12 to our checks

.github/workflows/ci.yml

@@ -14,13 +14,18 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+         python-version: ['3.8', '3.12']
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: ${{ matrix.python-version }}
+        cache: 'pip'
+        cache-dependency-path: requirements/dev.txt
     - name: Install dependencies
       run: |
         make requirements