fix(deps): update dependency @google-cloud/datastore to v3.1.1 (GoogleCloudPlatform#282)

Author: renovate[bot]

7-gce/package.json

@@ -26,7 +26,7 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
-    "@google-cloud/datastore": "3.1.0",
+    "@google-cloud/datastore": "3.1.1",
     "@google-cloud/debug-agent": "3.0.1",
     "@google-cloud/logging-winston": "^0.11.0",
     "@google-cloud/pubsub": "^0.24.0",