chore(deps): update container image redis to v15.2.6@f1bd6b8 by renovate (#26250)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [redis](https://truecharts.org/charts/stable/redis)
([source](https://redirect.github.com/bitnami/bitnami-docker-redis)) |
patch | `15.2.5` -> `15.2.6` |

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

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Co-authored-by: kqmaverick <kqmaverick@gmail.com>

charts/stable/ctfd/Chart.yaml

@@ -23,7 +23,7 @@ dependencies:
     tags: []
     import-values: []
   - name: redis
-    version: 15.2.5
+    version: 15.2.6
     repository: oci://tccr.io/truecharts
     condition: redis.enabled
     alias: ""
@@ -47,4 +47,4 @@ sources:
   - https://github.com/CTFd/CTFd
   - https://github.com/truecharts/charts/tree/master/charts/stable/ctfd
 type: application
-version: 6.5.6
+version: 6.5.7