chore(deps): update module sirupsen/logrus to v1.7.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
sirupsen/logrus	require	minor	v1.6.0 -> v1.7.1

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Release Notes

sirupsen/logrus

### [`v1.7.1`](https://togithub.com/sirupsen/logrus/releases/v1.7.1) [Compare Source](https://togithub.com/sirupsen/logrus/compare/v1.7.0...v1.7.1) ### Code quality: - use go 1.15 in travis - use magefile as task runner ### Fixes: - small fixes about new go 1.13 error formatting system - Fix for long time race condiction with mutating data hooks ### Features: - build support for zos ### [`v1.7.0`](https://togithub.com/sirupsen/logrus/releases/v1.7.0) [Compare Source](https://togithub.com/sirupsen/logrus/compare/v1.6.0...v1.7.0) - a new buffer pool management API has been added - a set of `Fn()` functions have been added - the dependency toward a windows terminal library has been removed

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