chore: bump slackapi/slack-github-action from 1.26.0 to 1.27.0

Bumps [slackapi/slack-github-action](https://github.com/slackapi/slack-github-action) from 1.26.0 to 1.27.0.
- [Release notes](https://github.com/slackapi/slack-github-action/releases)
- [Commits](slackapi/slack-github-action@v1.26.0...v1.27.0)

---
updated-dependencies:
- dependency-name: slackapi/slack-github-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/health-check.yml

@@ -67,7 +67,7 @@ jobs:
     steps:
       - name: Post to Slack
         id: slack
-        uses: slackapi/slack-github-action@v1.26.0
+        uses: slackapi/slack-github-action@v1.27.0
         with:
           channel-id: ${{ secrets.SLACK_CHANNEL }}
           slack-message: ":eyes: *${{ github.repository }}* GitHub Actions: ${{ github.workflow }} #${{ github.run_number }} failed.\n<${{ github.event.repository.url }}/actions/runs/${{ github.run_id }}|${{ github.event.head_commit.message }}>"