deps: bump postgrator from 7.3.0 to 8.0.0 (#30)

Bumps [postgrator](https://github.com/rickbergfalk/postgrator) from 7.3.0 to 8.0.0.
- [Changelog](https://github.com/rickbergfalk/postgrator/blob/master/CHANGELOG.md)
- [Commits](rickbergfalk/postgrator@v7.3.0...v8.0.0)

---
updated-dependencies:
- dependency-name: postgrator
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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