chore(package): Update dependency codecov to v3.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
codecov	devDependencies	minor	3.3.0 -> 3.4.0	source

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Release Notes

codecov/codecov-node

### [`v3.4.0`](https://togithub.com/codecov/codecov-node/compare/v3.3.0...v3.4.0) [Compare Source](https://togithub.com/codecov/codecov-node/compare/v3.3.0...v3.4.0)

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