chore(deps): bump pg from 8.9.0 to 8.10.0 (#528)

Bumps [pg](https://github.com/brianc/node-postgres/tree/HEAD/packages/pg) from 8.9.0 to 8.10.0.
- [Release notes](https://github.com/brianc/node-postgres/releases)
- [Changelog](https://github.com/brianc/node-postgres/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianc/node-postgres/commits/pg@8.10.0/packages/pg)

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

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