chore: Send slack notifications to core-protocol (#64)

Author: schneiderstefan

.github/workflows/ci-notify-slack.yml

@@ -30,5 +30,5 @@ jobs:
           method: chat.postMessage
           token: ${{ secrets.SLACK_API_TOKEN }}
           payload: |
-            channel: eng-dsm-prs
+            channel: eng-core-protocol-prs
             text: ":github: `${{ github.repository }}` <${{ github.event.pull_request.html_url }}|${{ steps.sanitize.outputs.safe_title }}>"