Update module github.com/cenkalti/backoff/v4 to v4.2.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/cenkalti/backoff/v4	require	minor	v4.1.3 -> v4.2.0

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Release Notes

cenkalti/backoff

### [`v4.2.0`](https://togithub.com/cenkalti/backoff/compare/v4.1.3...v4.2.0) [Compare Source](https://togithub.com/cenkalti/backoff/compare/v4.1.3...v4.2.0)

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