re-activate test matrix

.github/workflows/test.yml

@@ -10,8 +10,7 @@ jobs:
   test:
     strategy:
       matrix:
-        # python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
-        python: ["3.13"]
+        python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
       fail-fast: false
     runs-on: ubuntu-latest
     timeout-minutes: 40