Bump python version in python-package workflow

Author: astrochun

.github/workflows/python-package.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9']
+        python-version: ['3.10', '3.11']
     env:
       work_dir: ./test_folder