Bump karma-rollup-preprocessor from 7.0.7 to 7.0.8 (#162)

Bumps [karma-rollup-preprocessor](https://github.com/jlmakes/karma-rollup-preprocessor) from 7.0.7 to 7.0.8.
- [Release notes](https://github.com/jlmakes/karma-rollup-preprocessor/releases)
- [Changelog](https://github.com/jlmakes/karma-rollup-preprocessor/blob/master/CHANGELOG.md)
- [Commits](jlmakes/karma-rollup-preprocessor@7.0.7...7.0.8)

---
updated-dependencies:
- dependency-name: karma-rollup-preprocessor
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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