chore(deps): upgrade jenkins-x-plugins/jx-gitops to version 0.20.0

from: https://github.com/jenkins-x-plugins/jx-gitops.git

-----
# jenkins-x-plugins/jx-gitops

## Changes in version 0.20.0

### build

* deps: upgrade jenkins-x/lighthouse-client to v0.0.1191 (Maximilien Raulic)

### New Features

* handle list of trusted apps (Maximilien Raulic)

### Bug Fixes

* remove deprecated Periodic.Tags field usage (Maximilien Raulic)

pkg/plugins/versions.go

@@ -16,7 +16,7 @@ const (
 	ChangelogVersion = "0.10.3"
 
 	// GitOpsVersion the version of the jx gitops plugin
-	GitOpsVersion = "0.19.1"
+	GitOpsVersion = "0.20.0"
 
 	// HealthVersion the version of the jx health plugin
 	HealthVersion = "0.0.77"