build(deps-dev): bump eslint-config-prettier from 6.11.0 to 6.12.0 (#341)

Bumps [eslint-config-prettier](https://github.com/prettier/eslint-config-prettier) from 6.11.0 to 6.12.0.
- [Release notes](https://github.com/prettier/eslint-config-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-config-prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/eslint-config-prettier/compare/v6.11.0...v6.12.0)

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

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