Bump ember-resolver from 7.0.0 to 8.0.0

Bumps [ember-resolver](https://github.com/ember-cli/ember-resolver) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/ember-cli/ember-resolver/releases)
- [Changelog](https://github.com/ember-cli/ember-resolver/blob/master/CHANGELOG.md)
- [Commits](ember-cli/ember-resolver@v7.0.0...v8.0.0)

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

Author: dependabot-preview[bot]