Rebase Noggin on Python 3.9 in staging

Signed-off-by: Aurélien Bompard <aurelien@bompard.org>

roles/openshift-apps/noggin/templates/buildconfig.yml

@@ -21,9 +21,14 @@ spec:
     type: Source
     sourceStrategy:
       from:
+{% if env == "staging" %}
+        kind: DockerImage
+        name: registry.access.redhat.com/ubi8/python-39
+{% else %}
         kind: ImageStreamTag
         name: python:3.6
         namespace: openshift
+{% endif %}
   output:
     to:
       kind: ImageStreamTag