Add npm publish --dry-run to CI workflow (#31) (#32)

Author: mattfsourcecode

Diff for: .github/workflows/test.yml

@@ -55,3 +55,6 @@ jobs:
           sleep 5
           curl -I http://localhost:3000 || echo "Server verification skipped"
           pkill -f "node"
+
+      - name: Test npm publish
+        run: npm publish --dry-run