Update tryghost/actions digest to eee499f (#2019)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/cicd.yml

@@ -80,7 +80,7 @@ jobs:
     runs-on: ubuntu-latest
     if: always()
     steps:
-      - uses: tryghost/actions/actions/slack-build@3ab34d3d69687764be21eba3768f51f4ecc40ddd # main
+      - uses: tryghost/actions/actions/slack-build@eee499fcb6bc0efc75ba43f651282b95a96102b0 # main
         if: contains(needs.*.result, 'failure') && github.event_name == 'push' && github.ref == 'refs/heads/main'
         with:
           status: failure