fix(deps): update dependency apollo-server-express to v2.9.9

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
apollo-server-express	dependencies	patch	2.9.8 -> 2.9.9

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Release Notes

apollographql/apollo-server

### [`v2.9.9`](https://togithub.com/apollographql/apollo-server/compare/apollo-server@2.9.8...apollo-server@2.9.9) [Compare Source](https://togithub.com/apollographql/apollo-server/compare/3cdde1b7a71ace6411fbacf82a1a61bf737444a6...93002737d53dd9a50b473ab9cef14849b3e539aa)

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