build: automatic update of dev-testkube-worker-service

updates image kubeshop/testkube-worker-service tag '1.10.21-rc-5ddbca49' to '1.10.21-rc-e89bc3db'

Author: argocd-image-updater

charts/testkube-worker-service/.argocd-source-dev-testkube-worker-service.yaml

@@ -4,5 +4,5 @@ helm:
     value: docker.io/kubeshop/testkube-worker-service
     forcestring: true
   - name: image.tag
-    value: 1.10.21-rc-5ddbca49
+    value: 1.10.21-rc-e89bc3db
     forcestring: true