Deprecated api /alerts_channels being used

[vamshi05]

Description

Looks like /alerts_channels endpoint is supposed to be deprecated already as per https://api.newrelic.com/docs/#/Deprecation%20Notice%20-%20Alerts%20Channels but it seems to be used in this repository

newrelic-client-go/pkg/alerts/channels.go

Line 85 in a221c9e

nextURL := a.config.Region().RestURL("/alerts_channels.json")

nextURL := a.config.Region().RestURL("/alerts_channels.json")

Go Version

Provide the output of go version here please

Current behavior

Error: GET https://api.newrelic.com/v2/alerts_channels.json giving up after 4 attempt(s)

Expected behavior

No errors

Steps To Reproduce

Steps to reproduce the behavior:
1.

curl -X 'GET'
'https://api.newrelic.com/v2/alerts_channels.json'
-H 'accept: application/json'
-H "Api-Key: <>"

[vamshi05]

This issue has been surfaced during the New Relic Incident https://status.newrelic.com/incidents/9rlvqrkzt4br and seems to be resolved.
I'd still like to take suggestions on whether the above issue should be addressed or not.