Merge pull request #7677 from amacaskill/release-1.15.4

Promote image v1.15.4 pdcsi image to prod

Author: k8s-ci-robot

registry.k8s.io/images/k8s-staging-cloud-provider-gcp/images.yaml

@@ -50,6 +50,7 @@
     "sha256:ebf4d854ebf7dcff1d7d36fab160485d1f6196c5a1108416eafaa6b1b85c4f33": ["v1.15.0"]
     "sha256:7817ca6a3973946f8674e0a8462153d2dd1c3c20527f0358c807e27b2aa6e46c": ["v1.15.1"]
     "sha256:655c80cc980958766b68af32fc04ab2d72b3c16909c9512618c7104099ebcce9": ["v1.15.3"]
+    "sha256:52fc0cad369c48b93255b728a29862a765da9eb879ab1b593e769342409a6368": ["v1.15.4"]
     "sha256:23d2fe20c5307c3ef2580ed035084d9a57866717bd8b80bdc2dabd2097591227": ["v1.2.1"]
     "sha256:e9c355dd1ce57de91a0f9164bd2fe688938723e7f9bd40bb13652d603f41d25a": ["v1.2.2"]
     "sha256:7d20ed9af18c24b68b6afe715aeb539fd9c352af875d8329df4652bd0bc38ea8": ["v1.2.3"]