chore(drawio): update image docker.io/jgraph/drawio digest to 9ff2a16 (#43906)

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 |
`c5cbcdb` -> `9ff2a16` |

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charts/stable/drawio/Chart.yaml

@@ -37,5 +37,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/drawio
   - https://hub.docker.com/r/jgraph/drawio
 type: application
-version: 18.4.6
+version: 18.4.7
 

charts/stable/drawio/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/jgraph/drawio
-  tag: 29.3.2@sha256:c5cbcdb5c86e67621f242e95910b148dd1f4dda0b0466d213f9a1185e4891012
+  tag: 29.3.2@sha256:9ff2a16ef243c59510a395ea927fe156ce5f8eb5e8dbfbcfbd9b6d62e045541f
   pullPolicy: IfNotPresent
 securityContext:
   container: