update json-rpc-engine

package.json

@@ -113,7 +113,7 @@
     "gaba": "^1.6.0",
     "human-standard-token-abi": "^2.0.0",
     "jazzicon": "^1.2.0",
-    "json-rpc-engine": "^5.1.3",
+    "json-rpc-engine": "^5.1.4",
     "json-rpc-middleware-stream": "^2.1.1",
     "jsonschema": "^1.2.4",
     "lodash.debounce": "^4.0.8",

yarn.lock

@@ -15000,6 +15000,16 @@ json-rpc-engine@^5.1.3:
     promise-to-callback "^1.0.0"
     safe-event-emitter "^1.0.1"
 
+json-rpc-engine@^5.1.4:
+  version "5.1.4"
+  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-5.1.4.tgz#c18d1959eb175049fa7301d4866931ae2f879e47"
+  integrity sha512-nBFWYJ1mvlZL7gqq0M9230SxedL9CbSYO1WgrFi/C1Zo+ZrHUZWLRbr7fUdlLt9TC0G+sf/aEUeuJjR2lHsMvA==
+  dependencies:
+    async "^2.0.1"
+    eth-json-rpc-errors "^1.1.0"
+    promise-to-callback "^1.0.0"
+    safe-event-emitter "^1.0.1"
+
 json-rpc-error@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/json-rpc-error/-/json-rpc-error-2.0.0.tgz#a7af9c202838b5e905c7250e547f1aff77258a02"