Change Python version to 3.12 in deploy.yml

Author: rdb

.github/workflows/deploy.yml

@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-python@v1
       with:
-        python-version: '3.7'
+        python-version: '3.12'
     - name: Install requirements
       run: |
         sudo apt-get install --no-install-recommends graphviz