Update dependency underscore to v1.13.7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
underscore (source)	1.13.6 -> 1.13.7

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Release Notes

jashkenas/underscore (underscore)

### [`v1.13.7`](https://togithub.com/jashkenas/underscore/compare/1.13.6...1.13.7) [Compare Source](https://togithub.com/jashkenas/underscore/compare/1.13.6...1.13.7)

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