Bump github.com/spf13/viper from 1.4.0 to 1.7.1 in /kotsadm/operator

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.4.0 to 1.7.1.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](spf13/viper@v1.4.0...v1.7.1)

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

kotsadm/operator/go.mod

@@ -6,14 +6,13 @@ require (
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/google/martian v2.1.0+incompatible
 	github.com/gorilla/mux v1.8.0
-	github.com/gorilla/websocket v1.4.0
-	github.com/hashicorp/logutils v1.0.0 // indirect
+	github.com/gorilla/websocket v1.4.2
 	github.com/mitchellh/hashstructure v1.1.0
 	github.com/pact-foundation/pact-go v1.5.1
 	github.com/pkg/errors v0.9.1
 	github.com/replicatedhq/troubleshoot v0.10.11
 	github.com/spf13/cobra v0.0.7
-	github.com/spf13/viper v1.4.0
+	github.com/spf13/viper v1.7.1
 	gopkg.in/yaml.v2 v2.3.0
 	k8s.io/api v0.18.4
 	k8s.io/apimachinery v0.18.4