chore(deps): upgrade jenkins-x-plugins/jx-gitops to version 0.23.8

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

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# jenkins-x-plugins/jx-gitops

## Changes in version 0.23.8

### Bug Fixes

* update base image for preview (Mårten Svantesson)
* use OCI prefix on helm release (Christoffer Vig)
* OCI support in helm build and release (Christoffer Vig)
* helm OCI not adding repo dependency (Christoffer Vig)

### Chores

* linting and spelling (Mårten Svantesson)
* remove unused field (Mårten Svantesson)
* changes requested on PR (Christoffer Vig)

pkg/plugins/versions.go

@@ -16,7 +16,7 @@ const (
 	ChangelogVersion = "0.10.10"
 
 	// GitOpsVersion the version of the jx gitops plugin
-	GitOpsVersion = "0.23.7"
+	GitOpsVersion = "0.23.8"
 
 	// HealthVersion the version of the jx health plugin
 	HealthVersion = "0.0.77"