Update net-gateway-api nightly

bumping knative.dev/net-gateway-api 1c6a577...eb5a14e:
  > eb5a14e skip tls conformance tests for Contour (# 680)
  > 4df8957 refactor some probing tests (# 678)
  > 9efb1a6 upgrade to latest dependencies (# 677)
  > f3fa812 upgrade to latest dependencies (# 676)

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

third_party/gateway-api-latest/istio-gateway.yaml

@@ -22,7 +22,7 @@ metadata:
   labels:
     app.kubernetes.io/component: net-gateway-api
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240411-1c6a5773"
+    app.kubernetes.io/version: "20240412-eb5a14e0"
     experimental.istio.io/disable-gateway-port-translation: "true"
 spec:
   type: ClusterIP

third_party/gateway-api-latest/net-gateway-api.yaml

@@ -20,7 +20,7 @@ metadata:
     networking.knative.dev/ingress-provider: net-gateway-api
     app.kubernetes.io/component: net-gateway-api
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240411-1c6a5773"
+    app.kubernetes.io/version: "20240412-eb5a14e0"
 aggregationRule:
   clusterRoleSelectors:
     - matchLabels:
@@ -36,7 +36,7 @@ metadata:
     networking.knative.dev/ingress-provider: net-gateway-api
     app.kubernetes.io/component: net-gateway-api
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240411-1c6a5773"
+    app.kubernetes.io/version: "20240412-eb5a14e0"
 rules:
   - apiGroups: ["gateway.networking.k8s.io"]
     resources: ["httproutes", "referencegrants", "referencepolicies"]
@@ -69,7 +69,7 @@ metadata:
     networking.knative.dev/ingress-provider: net-gateway-api
     app.kubernetes.io/component: net-gateway-api
     app.kubernetes.io/name: knative-serving
-    app.kubernetes.io/version: "20240411-1c6a5773"
+    app.kubernetes.io/version: "20240412-eb5a14e0"
 data:
   _example: |
     ################################
@@ -123,7 +123,7 @@ metadata:
   labels:
     networking.knative.dev/ingress-provider: net-gateway-api
     app.kubernetes.io/component: net-gateway-api
-    app.kubernetes.io/version: "20240411-1c6a5773"
+    app.kubernetes.io/version: "20240412-eb5a14e0"
     app.kubernetes.io/name: knative-serving
 spec:
   replicas: 1
@@ -150,7 +150,7 @@ spec:
         - 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-gateway-api/cmd/controller@sha256:d89a87e674be7e1604833970dd345ae1b4b2e69fd0f004c443b23645b58ddb19
+          image: gcr.io/knative-nightly/knative.dev/net-gateway-api/cmd/controller@sha256:1cca268f676593b1014573b104a2825f5538dfd781defd64e072f96ece080a44
           resources:
             requests:
               cpu: 100m