Add Python 3.12 for tests (#68)

Author: Denis-Averin

.github/workflows/python-package.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
       # see https://www.python.org/downloads/
-        python-version: [ '3.5', '3.11' ]
+        python-version: [ '3.5', '3.12' ]
 
     steps:
     - uses: actions/checkout@v3