fix: upgrade pg from 8.11.5 to 8.13.3

Snyk has created this PR to upgrade pg from 8.11.5 to 8.13.3.

See this package in npm:
pg

See this project in Snyk:
https://app.snyk.io/org/samaradel/project/f58e7d35-ee85-42d7-ba59-4d42cad0b7d4?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot