Fix broken test, having install questions is mandatory

src/app.py

@@ -1984,6 +1984,7 @@ def _convert_v1_manifest_to_v2(manifest):
     manifest["maintainers"] = [maintainer] if maintainer else []
 
     install_questions = manifest["arguments"]["install"]
+
     manifest["install"] = {}
     for question in install_questions:
         name = question.pop("name")

src/tests/test_permission.py

@@ -78,6 +78,7 @@ def _permission_create_with_dummy_app(
                     "name": app,
                     "id": app,
                     "description": {"en": "Dummy app to test permissions"},
+                    "arguments": {"install": []}
                 },
                 f,
             )