updated python versions for github actions

Author: Tiendil

.github/workflows/run_tests.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v2