chore(helm): update image docker.io/nodered/node-red digest to 9492661 (#31546)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/nodered/node-red](https://redirect.github.com/node-red/node-red-docker)
| digest | `871225a` -> `9492661` |

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charts/stable/node-red/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/node-red
   - https://hub.docker.com/r/nodered/node-red
 type: application
-version: 21.4.1
+version: 21.4.2

charts/stable/node-red/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/nodered/node-red
   pullPolicy: IfNotPresent
-  tag: 4.0.8@sha256:871225abb46d62e434c75c73ec264c406ae1d0ea09b365ed9ffa122fdc327879
+  tag: 4.0.8@sha256:94926616c16e016e2468c2c83a8d9040ffdef1999e54a2b36e54986d37de2f7f
 service:
   main:
     ports: