Bump pg-promise from 9.1.4 to 9.2.1 (#6077)

Bumps [pg-promise](https://github.com/vitaly-t/pg-promise) from 9.1.4 to 9.2.1.
- [Release notes](https://github.com/vitaly-t/pg-promise/releases)
- [Commits](https://github.com/vitaly-t/pg-promise/compare/9.1.4...9.2.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -44,7 +44,7 @@
     "mongodb": "3.3.2",
     "node-rsa": "1.0.6",
     "parse": "2.7.1",
-    "pg-promise": "9.2.0",
+    "pg-promise": "9.2.1",
     "pluralize": "^8.0.0",
     "redis": "2.8.0",
     "semver": "6.3.0",