chore: Bump slackapi/slack-github-action from 1.27.0 to 2.0.0

Bumps [slackapi/slack-github-action](https://github.com/slackapi/slack-github-action) from 1.27.0 to 2.0.0.
- [Release notes](https://github.com/slackapi/slack-github-action/releases)
- [Commits](slackapi/slack-github-action@v1.27.0...v2.0.0)

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

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

.github/workflows/cron.yaml

@@ -20,7 +20,7 @@ jobs:
     - run: aws sts get-caller-identity
     - if: ${{ failure() }}
       name: Send a notification to Slack
-      uses: slackapi/slack-github-action@v1.27.0
+      uses: slackapi/slack-github-action@v2.0.0
       env:
         SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
         SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}