fix(deps): update apollo graphql packages to v3.6.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
apollo-server-core	3.6.3 -> 3.6.4
apollo-server-express	3.6.3 -> 3.6.4

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Release Notes

apollographql/apollo-server

### [`v3.6.4`](https://togithub.com/apollographql/apollo-server/blob/HEAD/CHANGELOG.md#v364) [Compare Source](https://togithub.com/apollographql/apollo-server/compare/289acad0e3777bd0010506763c3fd6e4c0289813...dfa9fef87b75513ff32391fb6d8dea4bf5c7d889) - `apollo-server-core`: Fixes a regression in v3.6.0 where usage reporting would never send traces for unexecutable operations (parse errors, validation errors, and unknown operation name errors). While "traces" for these operations won't actually contain an execution tree, they can contain interesting errors. [Issue #​6193](https://togithub.com/apollographql/apollo-server/issues/6193) [PR #​6194](https://togithub.com/apollographql/apollo-server/pull/6194)

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