workflow run annotations/notices

[mfulton26]

Is your feature request related to a problem? Please describe.
Workflow run attempts can have annotations/notices. I don't want to need to open each deployment message in Slack to see these annotations/notices.

Describe the solution you'd like
Have the number of notices listed in the updated Slack message. Perhaps even have the content of the notices posted to Slack as thread replies to the deployment Slack message.

Describe alternatives you've considered
Create my own GitHub Workflows that use Slack webhooks.

Additional context