chore(helm): update image docker.io/machines/filestash digest to a1d75d5 (#38871)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/machines/filestash | digest | `58d892e` -> `a1d75d5` |

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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: 9.3.8
+version: 9.3.9
 

charts/stable/filestash/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/machines/filestash
-  tag: latest@sha256:58d892e4f166fecd8982693d4c7f0d368c7b349fad10a4ae270ef53e2a5d5196
+  tag: latest@sha256:a1d75d5955e11f7262345264c20bda8902ef12eabf125e1f8e573f07a1f09a14
   pullPolicy: IfNotPresent
 
 securityContext: