chore(deps): update container image machines/filestash to latest@b859bd9 by renovate (#23772)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| machines/filestash | digest | `db1590b` -> `b859bd9` |

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

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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: 8.1.4
+version: 8.1.5

charts/stable/filestash/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: machines/filestash
-  tag: latest@sha256:db1590bc08cbd1c4f75c0131d14f75f923563b56b57e3c264a22a93f5fa9ab67
+  tag: latest@sha256:b859bd97429b0bf70a59931526bd3b8dd6f9b0cebdcf9789f25c04e5012e41c2
   pullPolicy: IfNotPresent
 
 securityContext: