Image promotion for cluster-api-azure v1.15.3

Signed-off-by: Matt Boersma <[email protected]>

Author: mboersma

registry.k8s.io/images/k8s-staging-cluster-api-azure/images.yaml

@@ -71,6 +71,7 @@
     "sha256:260579cce274f3379c55547b915df848ba1c02f9a6ed088fda325e6bede0a916": ["v1.15.0"]
     "sha256:64f99ffc892acd5df4340a533dd46385378d7574194a7f577cc53ba0c858675f": ["v1.15.1"]
     "sha256:ab1d6d4d9505694fb67701ab38f57551b3253e732db72bf3d5c4235c678c6768": ["v1.15.2"]
+    "sha256:1023c11561a25e60a3cfafb8996708688a44b5019a450318135f8ca0cac7edb9": ["v1.15.3"]
     "sha256:bc87b3fe3b0ecf0ced524d4428cd75da22fea5f6b97f5b6ff5f5a03011c6f756": ["v1.2.0"]
     "sha256:d15b0a528bd0f9c05ba71d169c393add40c529a15f6b5c629c6f0936fcb239c9": ["v1.2.1"]
     "sha256:ae274d73d389ef2832f6d8d113205c78644523a4528faac1cd2a3437ff38180e": ["v1.3.0"]