chore: Fix GH security warnings

Author: maraisr

example-hooks/package.json

@@ -25,8 +25,8 @@
     "relay-runtime": "^7.0.0",
     "todomvc-app-css": "^2.1.0",
     "todomvc-common": "^1.0.3",
-    "webpack": "^3.5.5",
-    "webpack-dev-server": "^2.7.1",
+    "webpack": "^4.41.2",
+    "webpack-dev-server": "^3.1.11",
     "whatwg-fetch": "2.0.3"
   },
   "devDependencies": {
@@ -48,11 +48,11 @@
     "babel-preset-stage-0": "^6.5.0",
     "babel-runtime": "^6.26.0",
     "csstype": "^2.5.6",
-    "fork-ts-checker-webpack-plugin": "^0.3.0",
+    "fork-ts-checker-webpack-plugin": "^3.1.1",
     "patch-package": "^6.2.0",
     "postinstall-postinstall": "^2.0.0",
     "relay-compiler": "^7.0.0",
-    "relay-compiler-language-typescript": "file:.yalc/relay-compiler-language-typescript",
+    "relay-compiler-language-typescript": "file:../lib",
     "ts-loader": "^6.2.0",
     "tslint": "^5.20.0",
     "tslint-plugin-relay": "^0.0.3",