chore(deps): update container image machines/filestash to latest@2d456fb by renovate (#25731)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| machines/filestash | digest | `3933c2a` -> `2d456fb` |

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charts/stable/filestash/Chart.yaml

@@ -36,4 +36,4 @@ sources:
   - https://hub.docker.com/r/machines/filestash
   - https://www.filestash.app/
 type: application
-version: 8.1.14
+version: 8.1.15

charts/stable/filestash/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: machines/filestash
-  tag: latest@sha256:3933c2acbc9ea0b147defe4d1957aa104acc70b4ef98f2fe06f699e9da12a9a2
+  tag: latest@sha256:2d456fb4834bf7aa309b46ecc0831f83f9e6e25619175a7977d3538d8dbfa62c
   pullPolicy: IfNotPresent
 
 securityContext: