Update python-app.yml

.github/workflows/python-app.yml

@@ -22,7 +22,7 @@ jobs:
       # reference the matrixe python version here.
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.10
+          python-version: 3.10.6
 
       # Cache the installation of Poetry itself, e.g. the next step. This prevents the workflow
       # from installing Poetry every time, which can be slow. Note the use of the Poetry version