Update tryghost/actions digest to 0607e4b (#168)

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

Author: renovate[bot]

.github/workflows/publish.yml

@@ -92,7 +92,7 @@ jobs:
             (cd "$dir" && npm publish ${{ (github.event.inputs['dry-run'] == 'true' && '--dry-run') || '' }})
           done
 
-      - uses: tryghost/actions/actions/slack-build@2390ec2c041d2413852201ac3894381e98e4b13f # main
+      - uses: tryghost/actions/actions/slack-build@0607e4b19217c375b376d7af0110ca6a851be288 # main
         if: failure()
         with:
           status: ${{ job.status }}

.github/workflows/test.yml

@@ -60,7 +60,7 @@ jobs:
 
       - uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7
 
-      - uses: tryghost/actions/actions/slack-build@2390ec2c041d2413852201ac3894381e98e4b13f # main
+      - uses: tryghost/actions/actions/slack-build@0607e4b19217c375b376d7af0110ca6a851be288 # main
         if: failure() && github.event_name == 'push' && github.ref == 'refs/heads/main'
         with:
           status: ${{ job.status }}