chore(deps): bump github.com/stretchr/testify from 1.6.1 to 1.7.0

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.6.1 to 1.7.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.6.1...v1.7.0)

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/prometheus/client_golang v1.9.0
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.6.1
+	github.com/stretchr/testify v1.7.0
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	k8s.io/api v0.20.2
 	k8s.io/apimachinery v0.20.4