Update module stretchr/testify to v1.7.0 - autoclosed

This PR contains the following updates:

Package	Type	Update	Change
github.com/stretchr/testify	require	minor	`v1.6.1` -> `v1.7.0`

Release Notes

stretchr/testify

### [`v1.7.0`](https://togithub.com/stretchr/testify/releases/v1.7.0) [Compare Source](https://togithub.com/stretchr/testify/compare/v1.6.1...v1.7.0) Minor feature improvements and bug fixes

Renovate configuration

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:vertical_traffic_light: Automerge: Disabled by config. Please merge this manually once you are satisfied.

:recycle: Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

[ ] If you want to rebase/retry this PR, check this box

This PR has been generated by WhiteSource Renovate. View repository job log here.

:warning: Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

:recycle: Renovate will retry this branch, including artifacts, only when one of the following happens:

any of the package files in this branch needs updating, or
the branch becomes conflicted, or
you check the rebase/retry checkbox if found above, or
you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: docker run --rm --name=renovate_go --label=renovate_child -v "/mnt/renovate/gh/buro9/microcosm":"/mnt/renovate/gh/buro9/microcosm" -v "/tmp/renovate-cache":"/tmp/renovate-cache" -v "/tmp/renovate-cache/others/go":"/tmp/renovate-cache/others/go" -e GOPATH -e CGO_ENABLED -w "/mnt/renovate/gh/buro9/microcosm" docker.io/renovate/go:1.12.17 bash -l -c "git config --global url.\"https://**redacted**@github.com/\".insteadOf \"https://github.com/\" && go get -d ./... && go mod vendor"
go: finding github.com/buro9/funcs v0.0.0-20200509155829-0a117fc83732
go: finding github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b
go: finding github.com/gorilla/securecookie v1.1.1
go: finding github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79
go: finding github.com/oleiade/reflections v1.0.0
go: finding github.com/microcosm-cc/bluemonday v1.0.2
go: finding github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e
go: finding golang.org/x/text v0.3.2
go: finding gopkg.in/oleiade/reflections.v1 v1.0.0
go: finding gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f
go: finding github.com/dustin/go-humanize v1.0.0
verifying github.com/oleiade/reflections@v1.0.0/go.mod: checksum mismatch
    downloaded: h1:rdFxbxq4QXVZWj0F+e9jqjDkc7dbp97vkRixKo2JR60=
    go.sum:     h1:RbATFBbKYkVdqmSFtx13Bb/tVhR0lgOBXunWTZKeL4w=

buro9 / microcosm