Update utils/google_app_engine/additional_requirements.txt

utils/google_app_engine/additional_requirements.txt

@@ -1,5 +1,5 @@
 # add these requirements in your app on top of the existing ones
-pip==23.3
-Flask==2.3.2
+pip==21.1
+Flask==1.0.2
 gunicorn==19.10.0
-werkzeug>=3.0.1 # not directly required, pinned by Snyk to avoid a vulnerability
+werkzeug>=2.2.3 # not directly required, pinned by Snyk to avoid a vulnerability