Fix prod scripts (#151)

Author: crdgonzalezca

packages/opencensus-web-instrumentation-zone-peer-dep/package-lock.json

@@ -64,5 +64,5 @@
     "@opencensus/web-instrumentation-zone-peer-dep": "^0.0.3",
     "zone.js": "~0.9.1"
   },
-  "sideEffects": false
+  "sideEffects": true
 }

packages/opencensus-web-instrumentation-zone/package.json

@@ -63,15 +63,15 @@
     "ts-loader": "^6.0.0",
     "tslib": "^1.9.3",
     "typescript": "^3.3.3333",
-    "webpack": "^4.18.0",
+    "webpack": "^4.39.1",
     "webpack-cli": "^3.1.0",
     "webpack-dev-server": "^3.2.1"
   },
   "dependencies": {
     "@opencensus/web-core": "^0.0.3",
     "@opencensus/web-exporter-ocagent": "^0.0.3",
-    "@opencensus/web-instrumentation-perf": "0.0.3",
     "@opencensus/web-initial-load": "^0.0.3",
+    "@opencensus/web-instrumentation-perf": "^0.0.3",
     "@opencensus/web-instrumentation-zone": "^0.0.3",
     "@opencensus/web-instrumentation-zone-peer-dep": "^0.0.3"
   },