Bump apollo-server-express from 2.6.8 to 2.6.9
Bump apollo-server-express from 2.6.8 to 2.6.9

Bumps [apollo-server-express](https://github.com/apollographql/apollo-server) from 2.6.8 to 2.6.9.
- [Release notes](https://github.com/apollographql/apollo-server/releases)
- [Changelog](https://github.com/apollographql/apollo-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/apollographql/apollo-server/compare/apollo-server-express@2.6.8...apollo-server-express@2.6.9)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
terascope/teraslice,terascope/teraslice,terascope/teraslice,terascope/teraslice