revert set of tested python versions

Author: Christopher Doris

.github/workflows/tests.yml

@@ -56,7 +56,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        pyversion: ["3.13", "3.12", "3.11", "3.10", "3.9", "3.8"]
+        pyversion: ["3", "3.8"]
 
     steps:
       - uses: actions/checkout@v4