drop Python 3.6

Author: nggit

.github/workflows/tests_and_coverage.yml

@@ -17,12 +17,11 @@ jobs:
           - '3.14'
           - '3.13'
           - '3.12'
-          - '3.11'
+          - '3.10'
           - '3.9'
           - '3.8'
           - '3.7'
-          - '3.6'
-          - 'pypy3.10'
+          - 'pypy3.11'
         os: ['ubuntu-22.04', 'windows-latest']
     timeout-minutes: 10
     steps: