Rebase webhook2fedmsg to python 3.13

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

roles/openshift-apps/webhook2fedmsg/files/imagestream.yml

@@ -1,10 +1,30 @@
 ---
 apiVersion: image.openshift.io/v1
-kind: ImageStream
-metadata:
-  name: webhook2fedmsg
-spec:
-  lookupPolicy:
-    local: false
-status:
-  dockerImageRepository: ""
+kind: List
+items:
+  - apiVersion: image.openshift.io/v1
+    kind: ImageStream
+    metadata:
+      name: webhook2fedmsg
+    spec:
+      lookupPolicy:
+        local: false
+    status:
+      dockerImageRepository: ""
+  # The Python 3.13 builder image
+  - apiVersion: image.openshift.io/v1
+    kind: ImageStream
+    metadata:
+      name: python-313
+    spec:
+      lookupPolicy:
+        local: false
+      tags:
+        - name: latest
+          from:
+            kind: DockerImage
+            name: quay.io/fedora/python-313:latest
+          importPolicy:
+            scheduled: true
+          referencePolicy:
+            type: Source

roles/openshift-apps/webhook2fedmsg/templates/buildconfig.yml.j2

@@ -21,8 +21,7 @@ spec:
     sourceStrategy:
       from:
         kind: ImageStreamTag
-        namespace: openshift
-        name: python:3.11-ubi9
+        name: python-313:latest
       env:
       # The .s2i/bin/assemble script uses this to build the frontend with the
       # correct API and Ipsilon addresses.