Update pythonpackage.yml

Add minor versions to test matrix

Author: Yobmod

.github/workflows/pythonpackage.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9.7] # , "3.10.0-rc.2"]
+        python-version: [3.7, 3.7.0, 3.7.2, 3.7.12, 3.8.0, 3.8.11, 3.8, 3.9.0, 3.9.7] # , "3.10.0-rc.2"]
 
     steps:
     - uses: actions/checkout@v2