chore(dependencies): update mongoose to ^4.1.2

Author: kingcody

app/templates/_package.json

@@ -16,7 +16,7 @@
     "babel-core": "^5.6.4",<% if (filters.jade) { %>
     "jade": "~1.2.0",<% } %><% if (filters.html) { %>
     "ejs": "~0.8.4",<% } %><% if (filters.mongoose) { %>
-    "mongoose": "~4.0.3",
+    "mongoose": "^4.1.2",
     "mongoose-bird": "~0.0.1",
     "connect-mongo": "^0.8.1",<% } %><% if (filters.sequelize) { %>
     "sequelize": "^3.5.1",