As Github as not officially released 3.13 yet use latest dev version

Author: sliverc

.github/workflows/tests.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13-dev"]
     env:
       PYTHON: ${{ matrix.python-version }}
     steps: