fix(deps): update dependency p-queue to v4 (googleapis#252)

renovate[bot] · JustinBeckwith · commit 9faa1346d4db · 2019-03-08T22:40:02.000-08:00
diff --git a/package.json b/package.json
@@ -22,7 +22,7 @@
     "js-yaml": "^3.10.0",
     "meow": "^5.0.0",
     "ora": "^3.0.0",
-    "p-queue": "^3.0.0",
+    "p-queue": "^4.0.0",
     "pify": "^4.0.0",
     "tmp-promise": "^1.0.4",
     "update-notifier": "^2.5.0"
