Pin version of jenkins app in the sw-catalog

Change-Id: I7048b5bd5087aef10c70c60c0654a4418bcabecf
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/mgmt-cluster/flux/templates/sw-catalogs/apps/jenkins/manifests/jenkins-hr.yaml b/installers/mgmt-cluster/flux/templates/sw-catalogs/apps/jenkins/manifests/jenkins-hr.yaml
index c87a95e..c5d7eb3 100644
--- a/installers/mgmt-cluster/flux/templates/sw-catalogs/apps/jenkins/manifests/jenkins-hr.yaml
+++ b/installers/mgmt-cluster/flux/templates/sw-catalogs/apps/jenkins/manifests/jenkins-hr.yaml
@@ -25,6 +25,7 @@
   chart:
     spec:
       chart: jenkins
+      version: '13.4.20'
       reconcileStrategy: ChartVersion
       sourceRef:
         kind: HelmRepository