Update dependency apn to v2

This MR contains the following updates:

Package	Type	Update	Change	References
apn	dependencies	major	^1.7.5 -> ^2.0.0	source

---

Release Notes

node-apn/node-apn

v2.2.0

Compare Source

• Proxy support (#​163)
• Updated dependencies

v2.1.5

Compare Source

• Improve typescript type definitions (#​536)
• Several documentation improvements (#​537, #​547, #​550, #​555, #​560, #​560)
• Update dependencies (#​566)
• Update .gitignore and add .nvmrc (#​573)

v2.1.4

Compare Source

• Don't mutate passed in payload object
• Change APNs development endpoint to api.development.push.apple.com
• Update node-http2 fork

v2.1.3

Compare Source

• Add thread-id to notification payload (#​484)
• Workaround an issue where APNS would return an HTTP 500 and make the connection unusable (#​449, #​480)
• Regularily renew JSON web token (#​449, #​480)

v2.1.2

Compare Source

• Add TypeScript type definitions (#​441, #​465)
• Update node-http2 fork to 3.3.6 and add stream.upstream not defined check (#​444)

v2.1.1

Compare Source

• Fix broken logger (#​438)
• Use archive URL for forked node-http2 module (#​433)

v2.1.0

Compare Source

• JSON Web Token support (#​401)
• Add threadId property for notifications
• Fix a leak caused when an error is emitted from the endpoint manager

v2.0.0

Compare Source

• HTTP/2 Provider API (#​277)
• apn.Connection has been renamed to apn.Provider
• apn.Feedback has been removed
• apn.Device has been removed - all tokens are now hex-encoded strings
• apn.token is provided to validate tokens and convert from Buffer if necessary
• Notifications are now required to have an associated topic
• pushNotification(notification, tokens) is now simply, send(notification, recipients)
• send returns a promise which will be fulfilled when all notifications have been sent (#​362)
• Reliable Delivery (#​168)
• Ability to mock apn.Provider behaviour
• Notification can be created in a "finished" state (#​240)

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever MR becomes conflicted.

🔕 Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Renovate Bot.