add 3.12 to tests (#28)

Author: tngTUDOR

.github/workflows/python-test.yml

@@ -33,7 +33,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        py-version: ["3.9", "3.11"]
+        py-version: ["3.9", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4