Bump slackapi/slack-github-action from 1.27.0 to 2.0.0 (#4436)

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@37ebaef...485a9d4)

---
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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/readonly.yml

@@ -213,7 +213,7 @@ jobs:
       - block-pipeline
     steps:
       - name: Send message to Slack
-        uses: slackapi/slack-github-action@37ebaef184d7626c5f204ab8d3baff4262dd30f0 # v1.27.0
+        uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
         if: ${{ !contains(needs.*.result, 'failure') }}
         with:
           channel-id: probation-integration-notifications
@@ -263,7 +263,7 @@ jobs:
           SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
 
       - name: Send failure message to Slack
-        uses: slackapi/slack-github-action@37ebaef184d7626c5f204ab8d3baff4262dd30f0 # v1.27.0
+        uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
         if: ${{ contains(needs.*.result, 'failure') }}
         with:
           channel-id: probation-integration-notifications

.github/workflows/reminders.yml

@@ -63,7 +63,7 @@ jobs:
 
       - name: Send message to Slack
         if: steps.runs.outputs.pending != '[]'
-        uses: slackapi/slack-github-action@37ebaef184d7626c5f204ab8d3baff4262dd30f0 # v1.27.0
+        uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
         with:
           channel-id: probation-integration-notifications
           payload: ${{ steps.transform.outputs.result }}