ci(test): remove support < Python3.9

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
   test:
     strategy:
       matrix:
-        python: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python: ["3.9", "3.10", "3.11"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3