Update tests.yaml

Author: skshetry

.github/workflows/tests.yaml

@@ -7,6 +7,6 @@ jobs:
     - uses: actions/checkout@v3
     - uses: wntrblm/[email protected]
       with:
-        python-versions: "3.7, 3.8, 3.9, 3.10, 3.11, 3.12"
+        python-versions: "3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13"
     - run: nox
     - run: nox -s build