fix(package): update pg-promise to version 10.5.5

Closes #6676

Author: greenkeeper[bot]

package.json

@@ -46,7 +46,7 @@
     "mime": "2.4.5",
     "mongodb": "3.5.7",
     "parse": "2.13.0",
-    "pg-promise": "10.5.3",
+    "pg-promise": "10.5.5",
     "pluralize": "^8.0.0",
     "redis": "3.0.2",
     "semver": "7.3.2",