fix(package): update @hapi/boom to version 8.0.1

Closes #606

Author: greenkeeper[bot]

package.json

@@ -82,7 +82,7 @@
     "sinon": "^7.4.2"
   },
   "dependencies": {
-    "@hapi/boom": "^7.4.3",
+    "@hapi/boom": "^8.0.1",
     "@hapi/hoek": "^8.2.4",
     "@hapi/joi": "^16.1.1",
     "@octokit/rest": "^16.29.0",