fix: update Python version

Author: judithspd

.github/workflows/.codecov.yml

@@ -8,10 +8,10 @@ jobs:
         uses: actions/checkout@v6
         with:
           fetch-depth: 0
-      - name: Set up Python 3.10
+      - name: Set up Python 3.12
         uses: actions/setup-python@v6
         with:
-          python-version: '3.10'
+          python-version: '3.12'
       - name: Install pytest
         run: pip install pytest-cov
       - name: Install poetry