fix(deps): update apollo graphql packages to v2.8.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
apollo-server	dependencies	patch	2.8.1 -> 2.8.2
apollo-server-testing	devDependencies	patch	2.8.1 -> 2.8.2

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Release Notes

apollographql/apollo-server

### [`v2.8.2`](https://togithub.com/apollographql/apollo-server/blob/master/CHANGELOG.md#v282) [Compare Source](https://togithub.com/apollographql/apollo-server/compare/apollo-server@2.8.1...apollo-server@2.8.2) > [See complete versioning details.](https://togithub.com/apollographql/apollo-server/commit/99f78c6782bce170186ba6ef311182a8c9f281b7) - `apollo-server-koa`: Update dependency koa to v2.8.1. [PR #​3175](https://togithub.com/apollographql/apollo-server/pull/3175) - `apollo-server-express`: Update types exported by the ASE package. [PR #​3173](https://togithub.com/apollographql/apollo-server/pull/3175) [PR #​3172](https://togithub.com/apollographql/apollo-server/pull/3172)

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Coverage remained the same at 72.527% when pulling 2c10c6c3409bc2c8364d46bd29bbee8dc6cefead on renovate/apollo-graphql-packages into 291c0fd417944dbf61c8aa141fc4ffb11fddaf25 on master.