Revert "Bump sjohnr/slack-workflow-status from 1.pre.beta to 1.1.0"

This reverts commit 40dd7a0d2d.

.github/workflows/continuous-integration-workflow.yml

@@ -310,7 +310,7 @@ jobs:
       - name: Send Slack message
         # Workaround while waiting for Gamesight/slack-workflow-status#38 to be fixed
         # See https://github.com/Gamesight/slack-workflow-status/issues/38
-        uses: sjohnr/slack-workflow-status@v1.1.0
+        uses: sjohnr/slack-workflow-status@v1-beta
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
           slack_webhook_url: ${{ secrets.SLACK_WEBHOOK_URL }}