[FIX] Fix fastify startup deprecation warning

[randomnerd]

Update the fastify package
Use the preHandler instead beforeHandlers - Fix Issue #3477

[apollo-cla]

@randomnerd: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Apollo Contributor License Agreement here: https://contribute.apollographql.com/

[randomnerd]

Could someone please do a review? Thanks!

[randomnerd]

updated to master, approval still required

[zieglar]

any update?

[zieglar]

@martijnwalraven @abernix please review this, need update with fastify

[pauloedurezende]

This change had already been made previously on #3527

[markrzen]

Duplicate of #2391

[abernix]

Closing as duplicate of #3527 and #2391. It is absolutely on my mind to get the major version bumped in the next major version of Apollo Server. I understand the disappointing delay, in particular on the Fastify updates, but opening more of these same/similar PRs won't get the blockers unblocked for that work. We are trying to get to a stage where this is less problematic both now, and in the future. (See also, #3184 and #3576)