chore(deps): bump sigs.k8s.io/controller-runtime in /operator

Bumps [sigs.k8s.io/controller-runtime](https://github.com/kubernetes-sigs/controller-runtime) from 0.6.0 to 0.8.3.
- [Release notes](https://github.com/kubernetes-sigs/controller-runtime/releases)
- [Commits](kubernetes-sigs/controller-runtime@v0.6.0...v0.8.3)

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

operator/go.mod

@@ -3,19 +3,19 @@ module github.com/inloco/kube-actions/operator
 go 1.15
 
 require (
-	github.com/go-logr/logr v0.1.0
+	github.com/go-logr/logr v0.3.0
 	github.com/google/go-github/v32 v32.1.0
 	github.com/google/uuid v1.2.0
 	github.com/microsoft/azure-devops-go-api/azuredevops v1.0.0-b3
 	github.com/onsi/ginkgo v1.16.2
 	github.com/onsi/gomega v1.12.0
 	github.com/square/go-jose/v3 v3.0.0-20200630053402-0a67ce9b0693
 	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
-	k8s.io/api v0.18.6
-	k8s.io/apimachinery v0.18.6
-	k8s.io/client-go v0.18.6
-	k8s.io/utils v0.0.0-20200716102541-988ee3149bb2
-	sigs.k8s.io/controller-runtime v0.6.0
+	k8s.io/api v0.20.2
+	k8s.io/apimachinery v0.20.2
+	k8s.io/client-go v0.20.2
+	k8s.io/utils v0.0.0-20210111153108-fddb29f9d009
+	sigs.k8s.io/controller-runtime v0.8.3
 )
 
 replace github.com/google/go-github/v32 => github.com/inloco/go-github/v32 v32.0.0-20200716220920-8f1b474407bc