build(deps): bump pg from 8.11.5 to 8.12.0 (#703)

Bumps [pg](https://github.com/brianc/node-postgres/tree/HEAD/packages/pg) from 8.11.5 to 8.12.0.
- [Changelog](https://github.com/brianc/node-postgres/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianc/node-postgres/commits/pg@8.12.0/packages/pg)

---
updated-dependencies:
- dependency-name: pg
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

yarn.lock

@@ -6784,9 +6784,9 @@ pg-types@^4.0.1:
     postgres-range "^1.1.1"
 
 pg@^8.11.0:
-  version "8.11.5"
-  resolved "https://registry.yarnpkg.com/pg/-/pg-8.11.5.tgz#e722b0a5f1ed92931c31758ebec3ddf878dd4128"
-  integrity sha512-jqgNHSKL5cbDjFlHyYsCXmQDrfIX/3RsNwYqpd4N0Kt8niLuNoRNH+aazv6cOd43gPh9Y4DjQCtb+X0MH0Hvnw==
+  version "8.12.0"
+  resolved "https://registry.yarnpkg.com/pg/-/pg-8.12.0.tgz#9341724db571022490b657908f65aee8db91df79"
+  integrity sha512-A+LHUSnwnxrnL/tZ+OLfqR1SxLN3c/pgDztZ47Rpbsd4jUytsTtwQo/TLPRzPJMp/1pbhYVhH9cuSZLAajNfjQ==
   dependencies:
     pg-connection-string "^2.6.4"
     pg-pool "^3.6.2"