Update gcloud versions (#347)

Update latest gcloud versions

Author: google-github-actions-bot

data/versions.json

@@ -488,5 +488,6 @@
   "531.0.0",
   "532.0.0",
   "533.0.0",
-  "534.0.0"
+  "534.0.0",
+  "535.0.0"
 ]