Add python 3.11+3.12 to test matrix

Author: samuelhwilliams

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04, windows-latest, macos-latest]
-        python-version: [3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12"]
         exclude:
           - os: macos-latest
             python-version: 3.7