chore(deps): Update dependencies to resolve `npm audit` warnings.

.travis.yml

@@ -42,5 +42,4 @@ before_script:
 script:
   - npm run outdated
   - npm test
-  # HACK: ignore npm audit errors for now until we get them all fixed
-  - npm audit || true
+  - npm audit

package.json

@@ -38,7 +38,7 @@
     "mozlog": "2.2.0",
     "mysql": "2.15.0",
     "mysql-patcher": "0.7.0",
-    "newrelic": "2.2.2",
+    "newrelic": "4.8.1",
     "raven": "2.2.1",
     "request": "2.85.0",
     "urijs": "1.19.1"
@@ -46,19 +46,18 @@
   "devDependencies": {
     "eslint-plugin-fxa": "git://github.com/mozilla/eslint-plugin-fxa.git#41504c9dd30e8b52900c15b524946aa0428aef95",
     "fxa-conventional-changelog": "1.1.0",
-    "grunt": "1.0.2",
+    "grunt": "1.0.3",
     "grunt-bump": "0.8.0",
     "grunt-conventional-changelog": "6.1.0",
     "grunt-copyright": "0.3.0",
     "grunt-eslint": "18.0.0",
     "grunt-nodemon": "0.4.2",
-    "grunt-nsp": "2.3.1",
     "insist": "1.x",
     "load-grunt-tasks": "3.5.2",
-    "mocha": "3.5.3",
-    "nock": "8.2.2",
+    "mocha": "5.2.0",
+    "nock": "10.0.0",
     "npmshrink": "1.0.1",
-    "nyc": "11.0.2",
+    "nyc": "13.1.0",
     "proxyquire": "1.8.0",
     "read": "1.0.7",
     "sinon": "1.17.7",