update testing matrix

Author: satra

.github/workflows/ci.yml

@@ -16,9 +16,10 @@ jobs:
           - ubuntu-20.04
           - macos-latest
         python:
-          - 3.7
           - 3.8
           - 3.9
+          - "3.10"
+          - 3.11
 
     steps:
       - uses: actions/checkout@v2