Bump @types/express from 4.11.1 to 4.16.1

Bumps [@types/express](https://github.com/DefinitelyTyped/DefinitelyTyped) from 4.11.1 to 4.16.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

package-lock.json

@@ -35,7 +35,7 @@
         "winston": "^2.4.4"
     },
     "devDependencies": {
-        "@types/express": "^4.11.1",
+        "@types/express": "^4.16.1",
         "@types/google-cloud__storage": "^1.7.2",
         "@types/mongodb": "^3.1.19",
         "@types/mongoose": "^5.3.8",