chore(helm): update image docker.io/machines/filestash digest to a21cbb0 (#38591)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/machines/filestash | digest | `9b549f5` -> `a21cbb0` |

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charts/stable/filestash/Chart.yaml

@@ -39,5 +39,5 @@ sources:
   - https://hub.docker.com/r/machines/filestash
   - https://www.filestash.app/
 type: application
-version: 9.3.4
+version: 9.3.5
 

charts/stable/filestash/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/machines/filestash
-  tag: latest@sha256:9b549f558717d6f6c3cba5c11edbebcd9160aad0f74120a16062fa72d34f74d0
+  tag: latest@sha256:a21cbb0c5deb1110bbd1ea0f9158494df249fbfa9004a66e8289392a200b6d41
   pullPolicy: IfNotPresent
 
 securityContext: