update mongoose to v5

package.json

@@ -42,7 +42,7 @@
     "fbgraph": "^1.4.1",
     "lodash": "^4.17.5",
     "lusca": "^1.5.2",
-    "mongoose": "^4.13.11",
+    "mongoose": "^5.4.2",
     "nodemailer": "^4.4.1",
     "passport": "^0.4.0",
     "passport-facebook": "^2.1.1",
@@ -81,7 +81,7 @@
     "@types/winston": "^2.3.7",
     "chai": "^4.1.2",
     "concurrently": "^3.5.1",
-    "jest": "^22.0.4",
+    "jest": "^24.0.0",
     "node-sass": "^4.11.0",
     "nodemon": "^1.18.10",
     "shelljs": "^0.8.1",