chore: run CI checks for py 3.13 (#83)

Signed-off-by: Michele Dolfi <[email protected]>

.github/workflows/checks.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.9"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
       # - name: Install dependencies [linux]