Ingress NGINX: Promote Test Runner v2.2.3.

Commit: kubernetes/ingress-nginx@c66aa89
Job: https://prow.k8s.io/view/gs/kubernetes-ci-logs/logs/post-ingress-nginx-test-runner/1971122074307006464
Build: https://storage.googleapis.com/kubernetes-ci-logs/logs/post-ingress-nginx-test-runner/1971122074307006464/artifacts/build.log

Author: Gacko

registry.k8s.io/images/k8s-staging-ingress-nginx/images.yaml

@@ -387,6 +387,7 @@
     "sha256:d0e1c47936200ea40294436dee573451aaae65bef5942cd3a4d56d43c92ad93d": ["v2.2.0"]
     "sha256:8407e6ccec478e9791267657995ee7a021385c52d8f79ea0e6aa4461742ecd21": ["v2.2.1"]
     "sha256:adc146da02b1c75ddb2d3bd2e20a05aceabc4c15f1a1d67192737b8a1fc47398": ["v2.2.2"]
+    "sha256:99f201302cdb6b066f9f49dc84625192dd9f908d8bf979e1fc4dae904c2dfb15": ["v2.2.3"]
 
 # Ingress NGINX: Chart
 - name: charts/ingress-nginx