Update dependency coveralls to v3.0.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
coveralls	devDependencies	patch	3.0.2 -> 3.0.3	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.

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