fix(deps): update dependency @google-cloud/promisify to v1 (#233)

renovate[bot] · JustinBeckwith · commit 8e6549b9afac · 2019-05-03T07:29:43.000-07:00
diff --git a/package.json b/package.json
@@ -33,7 +33,7 @@
   "dependencies": {
     "@google-cloud/common": "^0.32.0",
     "@google-cloud/projectify": "^0.3.0",
-    "@google-cloud/promisify": "^0.4.0",
+    "@google-cloud/promisify": "^1.0.0",
     "@grpc/proto-loader": "^0.5.0",
     "duplexify": "^4.0.0",
     "extend": "^3.0.2",
