Remove 3.6 and 3.7 from tests

Author: ppizarror

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     uses: ppizarror/workflow-actions/.github/workflows/test_python.yml@master
     strategy:
       matrix:
-        python: [ 3.6, 3.7, 3.8, 3.9, '3.10', '3.11', '3.12' ]
+        python: [ 3.8, 3.9, '3.10', '3.11', '3.12', '3.13' ]
     with:
       env-vars: |
         SDL_AUDIODRIVER=disk