fix: examples/using-typescript/package.json & examples/using-typescri…

…pt/.snyk to reduce vulnerabilities

The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/SNYK-JS-LODASH-567746

examples/using-typescript/package.json

@@ -7,14 +7,18 @@
   "scripts": {
     "start": "gatsby develop",
     "develop": "gatsby develop",
-    "build": "gatsby build"
+    "build": "gatsby build",
+    "snyk-protect": "snyk protect",
+    "prepublish": "npm run snyk-protect"
   },
   "dependencies": {
     "@types/node": "^8.0.7",
     "@types/react": "15.0.21",
     "@types/react-dom": "0.14.23",
     "gatsby": "latest",
     "gatsby-link": "latest",
-    "gatsby-plugin-typescript": "latest"
-  }
+    "gatsby-plugin-typescript": "latest",
+    "snyk": "^1.319.0"
+  },
+  "snyk": true
 }