Update net-contour nightly (#14827)

bumping knative.dev/net-contour a7df3f8...47c0fff:
  > 47c0fff upgrade to latest dependencies (# 1028)

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: "20240119-a7df3f85"
+    app.kubernetes.io/version: "20240123-47c0fff3"
     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: "20240119-a7df3f85"
+    app.kubernetes.io/version: "20240123-47c0fff3"
 data:
   _example: |
     ################################
@@ -95,7 +95,7 @@ metadata:
     networking.knative.dev/ingress-provider: contour
     app.kubernetes.io/component: net-contour
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240119-a7df3f85"
+    app.kubernetes.io/version: "20240123-47c0fff3"
 spec:
   replicas: 1
   selector:
@@ -107,14 +107,14 @@ spec:
         app: net-contour-controller
         app.kubernetes.io/component: net-contour
         app.kubernetes.io/name: knative-serving
-        app.kubernetes.io/version: "20240119-a7df3f85"
+        app.kubernetes.io/version: "20240123-47c0fff3"
     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@sha256:0d74e868043ce08f0a7fc46f9c3fa76e1fedbb6cc735634c6afd2b9988afe9cf
+          image: gcr.io/knative-nightly/knative.dev/net-contour/cmd/controller@sha256:2e49c700f77f3b961a54401315c678c231059565469a469748cd5720da7ef79f
           resources:
             requests:
               cpu: 40m
@@ -158,7 +158,7 @@ metadata:
     networking.knative.dev/ingress-provider: contour
     app.kubernetes.io/component: net-contour
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240119-a7df3f85"
+    app.kubernetes.io/version: "20240123-47c0fff3"
 spec:
   delegations:
     - secretName: knative-serving-certs