chore(github): move top prs and feature requests to different Slack channel (#76764)

## Why?

Re-organizing some information across internal Slack channels.

Author: samcx

.github/actions/next-repo-actions/dist/feature-requests/index.mjs

@@ -99,7 +99,7 @@ async function run() {
 
     await slackClient.chat.postMessage({
       blocks: generateBlocks(items),
-      channel: '#next-info',
+      channel: '#coord-next-triage',
       icon_emoji: ':github:',
       username: 'GitHub Notifier',
     })

.github/actions/next-repo-actions/dist/prs/index.js

@@ -49,7 +49,7 @@ async function run() {
 
       await slackClient.chat.postMessage({
         blocks,
-        channel: '#next-info',
+        channel: '#coord-next-triage',
         icon_emoji: ':github:',
         username: 'GitHub Notifier',
       })