chore(deps): update tests

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
coveralls	devDependencies	patch	3.0.2 -> 3.0.3	source
nyc	devDependencies	minor	13.1.0 -> 13.3.0	source

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Release Notes

nickmerwin/node-coveralls

### [`v3.0.3`](https://togithub.com/nickmerwin/node-coveralls/releases/3.0.3) [Compare Source](https://togithub.com/nickmerwin/node-coveralls/compare/3.0.2...3.0.3) As suggested by NPM and Snyk.

istanbuljs/nyc

### [`v13.3.0`](https://togithub.com/istanbuljs/nyc/blob/master/CHANGELOG.md#​1330httpsgithubcomistanbuljsnyccomparev1320v1330-2019-02-14) [Compare Source](https://togithub.com/istanbuljs/nyc/compare/v13.2.0...v13.3.0) ##### Bug Fixes - update dependencies due to vulnerabilities ([#​992](https://togithub.com/istanbuljs/nyc/issues/992)) ([e8cc59b](https://togithub.com/istanbuljs/nyc/commit/e8cc59b)), closes [#​991](https://togithub.com/istanbuljs/nyc/issues/991) ##### Features - Support nyc report --check-coverage ([#​984](https://togithub.com/istanbuljs/nyc/issues/984)) ([dd48410](https://togithub.com/istanbuljs/nyc/commit/dd48410)) ### [`v13.2.0`](https://togithub.com/istanbuljs/nyc/blob/master/CHANGELOG.md#​1330httpsgithubcomistanbuljsnyccomparev1320v1330-2019-02-14) [Compare Source](https://togithub.com/istanbuljs/nyc/compare/v13.1.0...v13.2.0) ##### Bug Fixes - update dependencies due to vulnerabilities ([#​992](https://togithub.com/istanbuljs/nyc/issues/992)) ([e8cc59b](https://togithub.com/istanbuljs/nyc/commit/e8cc59b)), closes [#​991](https://togithub.com/istanbuljs/nyc/issues/991) ##### Features - Support nyc report --check-coverage ([#​984](https://togithub.com/istanbuljs/nyc/issues/984)) ([dd48410](https://togithub.com/istanbuljs/nyc/commit/dd48410))

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