chore(helm): update image ghcr.io/suwayomi/tachidesk digest to 26687d1 (#29486)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/suwayomi/tachidesk | digest | `8fae7d6` -> `26687d1` |

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charts/stable/tachidesk-docker/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/suwayomi/docker-tachidesk
   - https://github.com/truecharts/charts/tree/master/charts/stable/tachidesk-docker
 type: application
-version: 8.2.5
+version: 8.2.6

charts/stable/tachidesk-docker/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: ghcr.io/suwayomi/tachidesk
-  tag: preview@sha256:8fae7d669ba8fb8d1eb7ccd0a55d7aed691868150d3063d5b8b6cec7f77a400c
+  tag: preview@sha256:26687d1426951a62ffa9081e7582afc4f9046b6219cdec89e04bfa1fe9564ca7
 
 securityContext:
   container: