fix: add python version for pip caching

Signed-off-by: Tom Plant <[email protected]>

.github/workflows/main.yml

@@ -21,6 +21,7 @@ jobs:
           allow-no-subscriptions: true
       - uses: actions/[email protected]
         with:
+          python-version: 3.12
           cache: pip
       - run: pip install -r requirements.txt
       - run: python main.py