Pick specific versions

Author: yalishanda42

.github/workflows/unittests.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9, 3.10, 3.11]
+        python-version: [3.8.15, 3.9.16, 3.10.9, 3.11]
 
     steps:
     - uses: actions/checkout@v2