clean up ci

Author: blink1073

.github/workflows/test-python.yml

@@ -37,7 +37,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04]
-        python-version: ["3.7", "3.11", "pypy-3.9"]
+        python-version: ["3.8", "3.11", "pypy-3.9"]
       fail-fast: false
     name: CPython ${{ matrix.python-version }}-${{ matrix.os }}
     steps: