fix(deps): update dependency debug to v4.1.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
debug	dependencies	patch	4.1.0 -> 4.1.1	source

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Release Notes

visionmedia/debug

### [`v4.1.1`](https://togithub.com/visionmedia/debug/releases/4.1.1) [Compare Source](https://togithub.com/visionmedia/debug/compare/4.1.0...4.1.1) This backport fixes a bug in coveralls configuration as well as the `.extend()` function. ### Patches - test: only run coveralls on travis ([#​663](https://togithub.com/visionmedia/debug/issues/663), [#​664](https://togithub.com/visionmedia/debug/issues/664), [`d0e498f`](https://togithub.com/visionmedia/debug/commit/d0e498f159bd425b3403db38c98fe26a345d4dcd)) - copy custom logger to namespace extension ([#​646](https://togithub.com/visionmedia/debug/issues/646), [`57ef085`](https://togithub.com/visionmedia/debug/commit/57ef085703a0158679cc4a56a4980653b828ce51))

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