Use jwks-rsa 2.x to get their async/await methods, for simpler code

[olleolleolle]

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest version of Parse Server.

Issue Description

👋 Hello, I hope this "this is a hunch for avoiding some complexity" Issue sits in the right place.

The dependency jwks-rsa has a new interface: its client methods are now no longer callbacks but directly awaitable things. We no longer need to use promisify() around them.

Using this new 2.x version would simplify our code.

Upgrade guide (this is the one thing in the guide which impacts us):
https://github.com/auth0/node-jwks-rsa/blob/master/CHANGELOG.md#migrated-callbacks-to-asyncawait

New Requirement: Node 10+.

I can see in package.json that 8+ is in our "engines". Can that be bumped?

Locations in our code where used: facebook, apple auth adapters.

• parse-server/src/Adapters/Auth/facebook.js

  Line 55 in 92f50f6

  jwksUri: `${TOKEN_ISSUER}/.well-known/oauth/openid/jwks/`,

• parse-server/src/Adapters/Auth/apple.js

  Line 12 in 033a0bd

  const client = jwksClient({

Steps to reproduce

Well, one can try installing parse-server with yarn and there are notes about

Actual Outcome

Um, existing code.

Expected Outcome

It would be simpler code to use the new API. Also, they dropped the Axios dep.

Failing Test Case / Pull Request

Sorry, no test case.

• 🤩 I submitted a PR with a fix and a test case.
• 🧐 I submitted a PR with a failing test case.

Environment

Server

• Parse Server version: 4.5.0
• Operating system: Linux
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): local

Database

• System (MongoDB or Postgres): mongo
• Database version: idk
• Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): local

Client

• SDK (iOS, Android, JavaScript, PHP, Unity, etc): javascript
• SDK version: idk

Logs

(No logs.)

[mtrezza]

Thanks for suggesting.

Parse Server is officially compatible and tested with Node >=10, so bumping the engine version to >=10 should be fine.

Would you want to start a PR?

[dplewis]

Closing as jwks-rsa 3.1.0 is currently used