Update tryghost/actions digest to 598d632 (#656)

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

Author: renovate[bot]

.github/workflows/publish.yml

@@ -74,7 +74,7 @@ jobs:
       - name: Publish to npm
         run: npx nx release publish ${{ (github.event.inputs['dry-run'] == 'true' && '--dry-run') || '' }}
 
-      - uses: tryghost/actions/actions/slack-build@144c12f81c50f03abc6e0f94e89909941e5836ae # main
+      - uses: tryghost/actions/actions/slack-build@598d6328d89dbd796aa02ae2ea66308f9d942224 # main
         if: failure()
         with:
           status: ${{ job.status }}

.github/workflows/test.yml

@@ -54,7 +54,7 @@ jobs:
 
       - uses: codecov/codecov-action@e79a6962e0d4c0c17b229090214935d2e33f8354 # v6
 
-      - uses: tryghost/actions/actions/slack-build@144c12f81c50f03abc6e0f94e89909941e5836ae # main
+      - uses: tryghost/actions/actions/slack-build@598d6328d89dbd796aa02ae2ea66308f9d942224 # main
         if: failure() && github.event_name == 'push' && github.ref == 'refs/heads/main'
         with:
           status: ${{ job.status }}