🆙 Update npm dependencies

package.json

@@ -64,13 +64,13 @@
     "express": "^4.16.2",
     "express-prom-bundle": "^5.0.2",
     "fingerprint-brunch": "^2.0.5",
-    "google-libphonenumber": "^3.2.1",
+    "google-libphonenumber": "^3.2.2",
     "helmet": "^3.11.0",
     "map-replace": "^1.0.2",
     "moment": "^2.22.0",
     "nhsuk-bunyan-logger": "^1.7.0",
     "node-sass": "^4.10.0",
-    "nunjucks": "^3.1.4",
+    "nunjucks": "^3.2.0",
     "prom-client": "^11.2.1",
     "querystring": "^0.2.0",
     "request-promise-native": "^1.0.5",
@@ -81,22 +81,22 @@
   },
   "devDependencies": {
     "chai": "^4.1.2",
-    "chai-http": "^4.0.0",
+    "chai-http": "^4.2.1",
     "cheerio": "^1.0.0-rc.2",
     "coveralls": "^3.0.0",
     "destroy": "^1.0.4",
     "eslint": "^5.0.1",
     "eslint-config-airbnb": "^17.0.0",
     "eslint-config-airbnb-base": "^13.0.0",
     "eslint-config-nhsuk": "^0.16.0",
-    "eslint-plugin-import": "^2.13.0",
+    "eslint-plugin-import": "^2.16.0",
     "eslint-plugin-json": "^1.3.2",
-    "eslint-plugin-mocha": "^5.2.0",
-    "eslint-watch": "^4.0.2",
+    "eslint-plugin-mocha": "^5.3.0",
+    "eslint-watch": "^5.0.1",
     "husky": "^1.0.1",
     "istanbul": "^1.1.0-alpha.1",
-    "mocha": "^5.0.0",
-    "nock": "^10.0.2",
+    "mocha": "^6.0.2",
+    "nock": "^10.0.6",
     "nodemon": "^1.18.7"
   }
 }