fix CI

Author: jamesob

.github/workflows/run-tests.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.8, 3.9]
+        python-version: [3.9.12, 3.10.6, 3.11.0, 3.12.0, 3.13.0]
         os: [ubuntu-18.04, macOS-latest]
 
     steps: