Use python 3.13 for mypy and sphinx job

Author: lucc

.github/workflows/ci.yml

@@ -30,6 +30,8 @@ jobs:
     - uses: actions/checkout@v3
     - name: Set up Python
       uses: actions/setup-python@v4
+      with:
+        python-version: "3.13"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -47,7 +49,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: "3.12"
+        python-version: "3.13"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip