chore(deps): bump slackapi/slack-github-action from 2.1.1 to 3.0.1 (#3223)

.github/workflows/test-e2e-admin-ui.yaml

@@ -242,7 +242,7 @@ jobs:
           enos scenario destroy --timeout 60m0s --chdir ./support/src/${{matrix.folder_name}}/enos ${{matrix.enos_scenario}} builder:local
 
       - name: Send Slack message on failure
-        uses: slackapi/slack-github-action@91efab103c0de0a537f72a35f6b8cda0ee76bf0a # v2.1.1
+        uses: slackapi/slack-github-action@af78098f536edbc4de71162a307590698245be95 # v3.0.1
         if: ${{ failure() && github.repository == 'hashicorp/boundary-ui' }}
         with:
           method: chat.postMessage