Merge pull request #12 from hhatto/fix-ghactions

specific pypy minor version

Author: hhatto

.github/workflows/python-package.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', 'pypy3']
+        python-version: ['3.6', '3.7', '3.8', '3.9', 'pypy-3.6', 'pypy-3.7']
 
     steps:
     - uses: actions/checkout@v2