fix(deps): update dependency @improbable-eng/grpc-web to ^0.14.0

Author: renovate-bot

package-lock.json

@@ -45,7 +45,7 @@
     "webpack-cli": "4.2.0"
   },
   "dependencies": {
-    "@improbable-eng/grpc-web": "^0.13.0",
+    "@improbable-eng/grpc-web": "^0.14.0",
     "events": "^3.0.0",
     "google-protobuf": "^3.6.1",
     "sdp-transform": "^2.14.0",