chore(deps): bump github.com/gobuffalo/packr/v2 from 2.8.1 to 2.8.3

Bumps [github.com/gobuffalo/packr/v2](https://github.com/gobuffalo/packr) from 2.8.1 to 2.8.3.
- [Release notes](https://github.com/gobuffalo/packr/releases)
- [Changelog](https://github.com/gobuffalo/packr/blob/master/.goreleaser.yml)
- [Commits](gobuffalo/packr@v2.8.1...v2.8.3)

---
updated-dependencies:
- dependency-name: github.com/gobuffalo/packr/v2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>