Merge pull request #1001 from increments/dependabot/github_actions/slackapi/slack-github-action-2.1.1

Bump slackapi/slack-github-action from 2.0.0 to 2.1.1

Author: ohakutsu

.github/workflows/notify_slack.yml

@@ -9,7 +9,7 @@ jobs:
     timeout-minutes: 5
     if: github.event.discussion && github.event.comment
     steps:
-      - uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
+      - uses: slackapi/slack-github-action@91efab103c0de0a537f72a35f6b8cda0ee76bf0a # v2.1.1
         with:
           method: chat.postMessage
           payload: |