Use >3,9

Author: shyuep

.github/workflows/test.yml

@@ -35,11 +35,11 @@ jobs:
             resolution: highest
             extras: ci,optional
           - os: ubuntu-latest
-            python: '3.x'
+            python: '>3.9'
             resolution: lowest-direct
             extras: ci,optional
           - os: macos-latest
-            python: '3.x'
+            python: '>3.9'
             resolution: lowest-direct
             extras: ci # test with only required dependencies installed