chore: Update discovery artifacts (#1402)

## Discovery Artifact Change Summary:
feat(metastore): update the api https://github.com/googleapis/google-api-python-client/commit/54639a05ea77c1a067ed1e3b5df46b2c029c47ea
diff --git a/googleapiclient/discovery_cache/documents/vectortile.v1.json b/googleapiclient/discovery_cache/documents/vectortile.v1.json
index 03d6eb3..a1fc842 100644
--- a/googleapiclient/discovery_cache/documents/vectortile.v1.json
+++ b/googleapiclient/discovery_cache/documents/vectortile.v1.json
@@ -343,7 +343,7 @@
       }
     }
   },
-  "revision": "20210602",
+  "revision": "20210605",
   "rootUrl": "https://vectortile.googleapis.com/",
   "schemas": {
     "Area": {