deps: update workflow deps

Author: marcomontalbano

.github/workflows/publish.yaml

@@ -57,7 +57,7 @@ jobs:
 
       - name: Post to a Slack channel
         id: slack
-        uses: slackapi/slack-github-action@v1.25.0
+        uses: slackapi/slack-github-action@v3
         with:
           # Slack channel id, channel name, or user id to post message.
           # See also: https://api.slack.com/methods/chat.postMessage#channels