chore(deps): update dependency mocha to '~> 2.4.1'

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mocha (source)	'~> 2.3.0' -> '~> 2.4.1'

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Release Notes

freerange/mocha (mocha)

### [`v2.4.1`](https://togithub.com/freerange/mocha/compare/v2.4.0...v2.4.1) [Compare Source](https://togithub.com/freerange/mocha/compare/v2.4.0...v2.4.1) ### [`v2.4.0`](https://togithub.com/freerange/mocha/compare/v2.3.0...v2.4.0) [Compare Source](https://togithub.com/freerange/mocha/compare/v2.3.0...v2.4.0)

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Configuration

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🚦 Automerge: Enabled.

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