Bump ember-prism from 0.6.1 to 0.7.0

Bumps [ember-prism](https://github.com/shipshapecode/ember-prism) from 0.6.1 to 0.7.0.
- [Release notes](https://github.com/shipshapecode/ember-prism/releases)
- [Changelog](https://github.com/shipshapecode/ember-prism/blob/master/CHANGELOG.md)
- [Commits](shipshapecode/ember-prism@v0.6.1...v0.7.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]