chore(helm): update image docker.io/jgraph/drawio digest to ec77f2d (#36597)

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 |
`7871e39` -> `ec77f2d` |

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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: 15.1.0
+version: 15.1.1
 

charts/stable/drawio/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/jgraph/drawio
-  tag: 27.1.6@sha256:7871e39b8d3a874ee335ecd94e3cfc171a18e3a1dd02f3b1010c1be814c6c43b
+  tag: 27.1.6@sha256:ec77f2d97a8cb559f9c1e7c32d1419d9b33dea01ef65866fe6e5c960d8ca2e51
   pullPolicy: IfNotPresent
 securityContext:
   container: