update onprem-release-2.8 branch

Author: mikhail-klimko

charts/codefresh/Chart.yaml

@@ -15,7 +15,7 @@ appVersion: 2.8.0
 annotations:
   artifacthub.io/prerelease: "false"
   artifacthub.io/alternativeName: "codefresh-onprem"
-  artifacthub.io/containsSecurityUpdates: "true"
+  artifacthub.io/containsSecurityUpdates: "false"
   # supported kinds are added, changed, deprecated, removed, fixed and security.
   artifacthub.io/changes: |
     - kind: changed