chore: add Python 3.13 to the CI (#115)

Author: bdraco

.github/workflows/ci.yml

@@ -39,6 +39,7 @@ jobs:
           - "3.10"
           - "3.11"
           - "3.12"
+          - "3.13"
         os:
           - ubuntu-latest
     runs-on: ${{ matrix.os }}