Bump graphql experimental dependency

[Maxou44]

Hello,

Graphql just released an update and is now available under the 17.0.0-alpha.3 tag.

It's a breaking change update, running a front using the alpha 3 and a server using this integration break the defer and stream features.

An update will solve that.

[trevor-scheer]

This change needs to land in Apollo Server itself. It's something I might eventually get to, but if you'd like it ASAP I'd be grateful to receive a PR for it!

[Maxou44]

Why this MR included the specific tag ?
https://github.com/apollo-server-integrations/apollo-server-integration-fastify/pull/246/files#diff-78a8a19706dbd2a4425dd72bdab0502ed7a2cef16365ab7030a5a0588927bf47R56

[trevor-scheer]

@Maxou44 thats for testing purposes. That tag is the canary release of graphql that AS4 currently tests against. At the time, that was the most current version of the defer implementation to build against.