Update gcloud versions (#356)

Update latest gcloud versions

Author: google-github-actions-bot

data/versions.json

@@ -489,5 +489,6 @@
   "532.0.0",
   "533.0.0",
   "534.0.0",
-  "535.0.0"
+  "535.0.0",
+  "536.0.0"
 ]