CRW-7974 Update job-config.json and versions to 3.20 in devspaces-3-rhel-9 branch.

Author: SDawley

dependencies/VERSION

@@ -1 +1 @@
-3.19
+3.20

dependencies/che-plugin-registry/deploy/openshift/devspaces-plugin-registry.yaml

@@ -117,10 +117,9 @@ parameters:
   - name: IMAGE
     value: registry.redhat.io/devspaces/pluginregistry-rhel9
     displayName: Red Hat OpenShift Dev Spaces plugin registry image
-    description: Red Hat OpenShift Dev Spaces plugin registry container image. Defaults
-      to registry.redhat.io/devspaces/pluginregistry-rhel9
+    description: Red Hat OpenShift Dev Spaces plugin registry container image. Defaults to registry.redhat.io/devspaces/pluginregistry-rhel9
   - name: IMAGE_TAG
-    value: '3.19'
+    value: '3.20'
     displayName: Red Hat OpenShift Dev Spaces plugin registry version
     description: Red Hat OpenShift Dev Spaces plugin registry version
   - name: MEMORY_LIMIT