refactor(mobsf): bump python version to 3.9

Author: Aaron-Ritter

.github/workflows/mobsf.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Setup python
         uses: actions/[email protected]
         with:
-          python-version: 3.8
+          python-version: 3.9
 
       # Sets up the reviewdog cli
       - name: Setup reviewdog