Update Slack notification to mention @hub-team instead of @channel

.github/workflows/ci.yaml

@@ -14,6 +14,7 @@ on:
 env:
  API_KEY: ${{ secrets.ULTRALYTICS_HUB_API_KEY }}
  MODEL_ID: ${{ secrets.ULTRALYTICS_HUB_MODEL_ID }}
+ HUB_TEAM_SLACK_ID: ${{ secrets.HUB_TEAM_SLACK_ID }}
 
 jobs:
  Tests:
@@ -99,6 +100,6 @@ jobs:
  uses: slackapi/slack-github-action@v1.27.0
  with:
  payload: |
- {"text": "<!channel> GitHub Actions error for ${{ github.workflow }} ❌\n\n\n*Repository:* https://github.com/${{ github.repository }}\n*Action:* https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}\n*Author:* ${{ github.actor }}\n*Event:* ${{ github.event_name }}\n"}
+ {"text": "<!subteam^${{ secrets.HUB_TEAM_SLACK_ID }}|@hub-team> GitHub Actions error for ${{ github.workflow }} ❌\n\n\n*Repository:* https://github.com/${{ github.repository }}\n*Action:* https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}\n*Author:* ${{ github.actor }}\n*Event:* ${{ github.event_name }}\n"}
  env:
  SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL_HUBWEB }}