chore(deps): update container image machines/filestash to latest@88af57f by renovate (#25003)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| machines/filestash | digest | `4a20cb4` -> `88af57f` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://togithub.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC4yNS4wIiwidXBkYXRlZEluVmVyIjoiMzguMjUuMCIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJhdXRvbWVyZ2UiLCJ1cGRhdGUvZG9ja2VyL2dlbmVyYWwvbm9uLW1ham9yIl19-->

charts/stable/filestash/Chart.yaml

@@ -36,4 +36,4 @@ sources:
   - https://hub.docker.com/r/machines/filestash
   - https://www.filestash.app/
 type: application
-version: 8.1.8
+version: 8.1.9

charts/stable/filestash/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: machines/filestash
-  tag: latest@sha256:4a20cb41161cc518f1e4f5a8d36bb28041f881990cf7a5fa020f8953e26c7532
+  tag: latest@sha256:88af57f6db3ec81cf225995764b2aaaa339c9b1049ccad4d18fc2c812ae0f789
   pullPolicy: IfNotPresent
 
 securityContext: