fix(package): update ejs to version 3.0.2

Closes #10

Author: greenkeeper[bot]

package.json

@@ -35,7 +35,7 @@
     "@babel/preset-env": "^7.4.3",
     "@babel/register": "^7.4.0",
     "babel-polyfill": "^6.26.0",
-    "ejs": "^2.6.1",
+    "ejs": "^3.0.2",
     "express": "^4.16.4",
     "mongodb": "^3.2.3",
     "redis": "^3.0.0",