chore(package): update pg to version 7.11.0

Author: greenkeeper[bot]

package.json

@@ -71,6 +71,6 @@
     "express": "4.16.4",
     "kube-probe": "^0.3.1",
     "license-reporter": "^1.2.0",
-    "pg": "^7.8.2"
+    "pg": "^7.11.0"
   }
 }