migrate npm upgrade to ncu (#837)

* upgrade aws dependencies

* migrate the npm-upgrade config file to an npm-check-updates config file

Author: philvarner

.ncurc.json

@@ -0,0 +1,4 @@
+{
+  "upgrade": false,
+  "reject": ["@types/node", "got", "ava", "@ava/typescript", "eslint"]
+}