fix(deps): update dependency apollo-server-express to v2.9.16

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
apollo-server-express	dependencies	patch	2.9.15 -> 2.9.16

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Release Notes

apollographql/apollo-server

### [`v2.9.16`](https://togithub.com/apollographql/apollo-server/compare/apollo-server@2.9.15...apollo-server@2.9.16) [Compare Source](https://togithub.com/apollographql/apollo-server/compare/0743d6b2f1737758cf09e80d2086917772bc00c9...4d1a75e318897c335674c7ee046c0baec7df4a9b)

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