chore(helm): update image docker.io/jgraph/drawio digest to 4f9f6cd (#35831)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [docker.io/jgraph/drawio](https://www.drawio.com)
([source](https://redirect.github.com/jgraph/docker-drawio)) | digest |
`600e581` -> `4f9f6cd` |

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charts/stable/drawio/Chart.yaml

@@ -35,5 +35,5 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/drawio
   - https://hub.docker.com/r/jgraph/drawio
 type: application
-version: 15.0.3
+version: 15.0.4
 

charts/stable/drawio/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/jgraph/drawio
-  tag: 27.0.9@sha256:600e58120bcda3a88c4870f9674a12cd4270e251784cb35cc09699520169205e
+  tag: 27.0.9@sha256:4f9f6cdcce1b820d3a5082e8da0d1342eff7235ef19a9b92244c4276f0ec7d86
   pullPolicy: IfNotPresent
 securityContext:
   container: