ci: upgrade test runner to Python 3.13

Author: MrIndeciso

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 15
     strategy:
       matrix:
-        python-version: ["3.10", "3.12"]
+        python-version: ["3.10", "3.13"]
 
     steps:
     - uses: actions/checkout@v4