fix(pulsehub): update image tag to use short Git SHA for ArgoCD

Author: fullstackjam

applications/pulsehub.yaml

@@ -12,7 +12,7 @@ spec:
     helm:
       parameters:
         - name: image.tag
-          value: $ARGOCD_APP_REVISION
+          value: $ARGOCD_APP_REVISION_SHORT
   destination:
     name: in-cluster
     namespace: pulsehub