chore(deps): bump underscore from 1.13.2 to 1.13.8 (#346)

Bumps [underscore](https://github.com/jashkenas/underscore) from 1.13.2 to 1.13.8.
- [Commits](jashkenas/underscore@1.13.2...1.13.8)

---
updated-dependencies:
- dependency-name: underscore
  dependency-version: 1.13.8
  dependency-type: indirect
...

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