Remove py3.6 and py3.7

Author: Zeroto521

.github/workflows/tests.yml

@@ -25,8 +25,6 @@ jobs:
           - windows-latest
         dev: [false]
         python-version:
-          - "3.6"
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"