Update tox_ci.yml

Author: MKoesters

.github/workflows/tox_ci.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: ['3.8', '3.9', '3.10']
+        python: ['3.9', '3.10', '3.11']
     steps:
       - uses: actions/checkout@v4
       - name: Setup Python