Update gcloud versions (#370)

Update latest gcloud versions

Author: google-github-actions-bot

data/versions.json

@@ -503,5 +503,6 @@
   "545.0.0",
   "546.0.0",
   "547.0.0",
-  "548.0.0"
+  "548.0.0",
+  "549.0.0"
 ]