Update lerna-changelog requirement from ^0.7.0 to ^0.8.2
Update lerna-changelog requirement from ^0.7.0 to ^0.8.2

Updates the requirements on [lerna-changelog](https://github.com/lerna/lerna-changelog) to permit the latest version.
- [Release notes](https://github.com/lerna/lerna-changelog/releases)
- [Changelog](https://github.com/lerna/lerna-changelog/blob/master/CHANGELOG.md)
- [Commits](https://github.com/lerna/lerna-changelog/commits/v0.8.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
ember-cli/ember-cli-test-loader