Pin ansible and ansible-lint on pull-req

.github/workflows/pull-requests.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install ansible ansible-lint
+        pip install ansible==6.4.0 ansible-lint==6.7.0
 
     - name: Syntax Check
       run: |