Update tests.yml (use python version 3.10, 3.11 and 3.12 for tests)

Author: rolfjl

.github/workflows/tests.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, "3.10", 3.11]
+        python-version: [3.10, 3.11, 3.12]
 
     steps:
     - uses: actions/checkout@v2