chore(deps): bump pg-connection-string from 2.5.0 to 2.6.2 (#630)

Bumps [pg-connection-string](https://github.com/brianc/node-postgres/tree/HEAD/packages/pg-connection-string) from 2.5.0 to 2.6.2.
- [Changelog](https://github.com/brianc/node-postgres/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianc/node-postgres/commits/pg-connection-string@2.6.2/packages/pg-connection-string)

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

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Author: dependabot[bot]