Update net-contour nightly (#15536)

bumping knative.dev/net-contour 5e645ad...3a7b328:
  > 3a7b328 upgrade to latest dependencies (# 1132)

Signed-off-by: Knative Automation <automation@knative.team>

third_party/contour-latest/net-contour.yaml

@@ -8,7 +8,7 @@ metadata:
     networking.knative.dev/ingress-provider: contour
     app.kubernetes.io/component: net-contour
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240925-5e645adb"
+    app.kubernetes.io/version: "20240926-3a7b328d"
     serving.knative.dev/controller: "true"
 rules:
   - apiGroups: ["projectcontour.io"]
@@ -38,7 +38,7 @@ metadata:
     networking.knative.dev/ingress-provider: contour
     app.kubernetes.io/component: net-contour
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240925-5e645adb"
+    app.kubernetes.io/version: "20240926-3a7b328d"
 data:
   _example: |
     ################################
@@ -111,7 +111,7 @@ metadata:
     networking.knative.dev/ingress-provider: contour
     app.kubernetes.io/component: net-contour
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240925-5e645adb"
+    app.kubernetes.io/version: "20240926-3a7b328d"
 spec:
   replicas: 1
   selector:
@@ -123,14 +123,14 @@ spec:
         app: net-contour-controller
         app.kubernetes.io/component: net-contour
         app.kubernetes.io/name: knative-serving
-        app.kubernetes.io/version: "20240925-5e645adb"
+        app.kubernetes.io/version: "20240926-3a7b328d"
     spec:
       serviceAccountName: controller
       containers:
         - name: controller
           # This is the Go import path for the binary that is containerized
           # and substituted here.
-          image: gcr.io/knative-nightly/knative.dev/net-contour/cmd/controller@sha256:8e6e1a32354b17ad02f2916201b07c26e70ebecb176388cf5440e1daba9052d5
+          image: gcr.io/knative-nightly/knative.dev/net-contour/cmd/controller@sha256:9285630702af35b0470820b2ffadd954c98f26f9153f43e7ae93a49ca9f19e39
           resources:
             requests:
               cpu: 40m
@@ -174,7 +174,7 @@ metadata:
     networking.knative.dev/ingress-provider: contour
     app.kubernetes.io/component: net-contour
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240925-5e645adb"
+    app.kubernetes.io/version: "20240926-3a7b328d"
 spec:
   delegations:
     - secretName: routing-serving-certs