Update package.json

Author: nkumar-topcoder

package.json

@@ -17,6 +17,7 @@
     "informix-wrapper": "git+https://github.com/appirio-tech/informix-wrapper.git",
     "no-kafka": "^3.4.3",
     "pg": "^7.12.1",
+    "sleep": "^6.1.0",
     "standard": "^13.1.0",
     "underscore": "^1.9.1",
     "winston": "^3.2.1",