chore(drawio): update image docker.io/jgraph/drawio digest to fff32eb (#43460)

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 |
`4c064d2` -> `fff32eb` |

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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: 18.3.11
+version: 18.3.12
 

charts/stable/drawio/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/jgraph/drawio
-  tag: 29.2.9@sha256:4c064d20674e9ef24b4b7ca1a9b9fb6596d9cd8b2fb7bf042435f23ce4c361c2
+  tag: 29.2.9@sha256:fff32eb35e0dc5d76ed234799c7312ce367db2e2d222bd40e55b003381584cb6
   pullPolicy: IfNotPresent
 securityContext:
   container: