Fix mirror typo in emoji and gcloud error.

PiperOrigin-RevId: 431566908

.buildkite/hooks/pre-command

@@ -42,11 +42,8 @@ sudo rm -rf /tmp/profile
 
 # Download credentials, if a release agent.
 if test "${BUILDKITE_AGENT_META_DATA_QUEUE}" = "release"; then
-  # Update gcloud components.
-  gcloud components update -q
-
   # Pull down secrets.
-  gcloud secrets versions access --secret="repo-key" > repo.key
+  gcloud secrets versions access --secret="repo-key" latest > repo.key
 
   # Configure the Docker credential helper (to push images).
   gcloud auth configure-docker -q

.buildkite/release.yaml

@@ -19,7 +19,7 @@ steps:
     commands:
       - make push-all-images
   - <<: *common
-    label: "ship: Push all images (aarch64)"
+    label: ":ship: Push all images (aarch64)"
     commands:
       - make ARCH=aarch64 push-all-images
   - <<: *common