chore(package): update dependencies and elliminate vulnabirities

Author: Peter Marton

package.json

@@ -36,23 +36,23 @@
   },
   "devDependencies": {
     "bunyan": "^1.8.10",
-    "chai": "^4.0.2",
-    "coveralls": "^3.0.0",
-    "eslint": "^4.1.1",
+    "chai": "^4.2.0",
+    "coveralls": "^3.0.3",
+    "eslint": "^5.16.0",
     "istanbul": "^0.4.5",
     "mkdirp": "^0.5.1",
-    "mocha": "^5.0.1",
+    "mocha": "^6.1.4",
     "nsp": "^3.2.1",
     "nsp-preprocessor-yarn": "^1.0.1",
-    "restify": "^6.3.4",
-    "restify-clients": "^1.5.0"
+    "restify": "^8.3.1",
+    "restify-clients": "^2.6.4"
   },
   "optionalDependencies": {
     "safe-json-stringify": "^1.0.4"
   },
   "dependencies": {
     "@netflix/nerror": "^1.0.0",
     "assert-plus": "^1.0.0",
-    "lodash": "^4.17.4"
+    "lodash": "^4.17.11"
   }
 }