Trigger build with new base image

Author: Travis CI User

base_images.json

@@ -40,7 +40,7 @@
     "destStage": "edge",
     "destNamespace": "build-images",
     "destImage": "helm-operator",
-    "tag": "v1.27.0",
+    "tag": "v1.28.0",
     "updatePackages": []
   },
   {