check for recent missed

.cloudbuild/bluegreen-update.sh

@@ -3,7 +3,7 @@
 set -euo pipefail
 
 # Ensure that our cloudbuild has everything we need
-for cmd in git yq kubectl gcloud; do
+for cmd in git yq kubectl gcloud kustomize curl; do
     if ! command -v $cmd &> /dev/null; then
         echo "Error: $cmd is not installed." >&2
         exit 1