Updated tested under Python versions to 3.8, 3.11, 3.12, pypy-3.9

Author: emanlove

.github/workflows/CI.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.9, pypy-3.7]
+        python-version: [3.8, 3.11, 3.12, pypy-3.9]
         rf-version: [4.1.3, 5.0.1, 6.0.1]
 
     steps: