Bump k8s.io/client-go from 0.17.3 to 0.20.0 in /smi-conformance

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.17.3 to 0.20.0.
- [Release notes](https://github.com/kubernetes/client-go/releases)
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.17.3...v0.20.0)

---
updated-dependencies:
- dependency-name: k8s.io/client-go
  dependency-type: direct:production
...

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

smi-conformance/go.mod

@@ -3,9 +3,7 @@ module github.com/layer5io/learn-layer5/smi-conformance
 go 1.13
 
 require (
-	cloud.google.com/go v0.46.3 // indirect
-	github.com/golang/protobuf v1.4.2
-	github.com/google/go-cmp v0.5.2 // indirect
+	github.com/golang/protobuf v1.4.3
 	github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4
 	github.com/kr/text v0.2.0 // indirect
 	github.com/kudobuilder/kuttl v0.0.0-00010101000000-000000000000
@@ -15,17 +13,12 @@ require (
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/onsi/ginkgo v1.14.1 // indirect
 	github.com/onsi/gomega v1.10.2 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/sirupsen/logrus v1.7.0
-	github.com/stretchr/testify v1.6.1 // indirect
-	golang.org/x/net v0.0.0-20200822124328-c89045814202 // indirect
-	golang.org/x/sys v0.0.0-20201009025420-dfb3f7c4e634 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/grpc v1.30.0
-	google.golang.org/protobuf v1.24.0
+	google.golang.org/protobuf v1.25.0
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
-	k8s.io/api v0.17.3
-	k8s.io/client-go v0.17.3
+	k8s.io/api v0.20.0
+	k8s.io/client-go v0.20.0
 	sigs.k8s.io/controller-runtime v0.5.1
 )