fix(authentik): remove deprecated dependency (#46283)

**Description**

Authentik removed is requirement for redis in 2025.10

See: https://goauthentik.io/blog/2025-11-13-we-removed-redis/


⚒️ Fixes  # <!--(issue)-->

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [x] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code
- [ ] 📜 Documentation Changes

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Tested chart renders

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**✔️ Checklist:**

- [x] ⚖️ My code follows the style guidelines of this project
- [X] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made changes to the documentation
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [x] ⬆️ I increased versions for any altered app according to semantic
versioning
- [x] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):`, `chore(chart-name):`, `docs(chart-name):` or
`fix(docs):`

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

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charts/stable/authentik/Chart.yaml

@@ -17,13 +17,6 @@ dependencies:
     alias: ""
     tags: []
     import-values: []
-  - name: valkey
-    version: 1.0.0
-    repository: oci://oci.trueforge.org/truecharts
-    condition: redis.enabled
-    alias: redis
-    tags: []
-    import-values: []
 deprecated: false
 description: Authentik is an open-source Identity Provider focused on flexibility and versatility.
 home: https://trueforge.org/truetech/truecharts/charts/stable/authentik
@@ -46,5 +39,4 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/authentik
   - https://goauthentik.io/docs/
 type: application
-version: 40.0.0
-
+version: 40.0.1

charts/stable/authentik/templates/_config.tpl

@@ -19,8 +19,6 @@ server-worker:
     AUTHENTIK_POSTGRESQL__USER: {{ .Values.cnpg.main.user }}
     AUTHENTIK_POSTGRESQL__HOST: {{ .Values.cnpg.main.creds.host }}
     AUTHENTIK_POSTGRESQL__PORT: "5432"
-    AUTHENTIK_REDIS__HOST: {{ .Values.redis.creds.plain }}
-    AUTHENTIK_REDIS__PORT: "6379"
 
     {{/* Outposts */}}
     AUTHENTIK_OUTPOSTS__DISCOVER: "false"

charts/stable/authentik/templates/_secret.tpl

@@ -14,7 +14,6 @@ server-worker:
   data:
     {{/* Dependencies */}}
     AUTHENTIK_POSTGRESQL__PASSWORD: {{ .Values.cnpg.main.creds.password | trimAll "\"" }}
-    AUTHENTIK_REDIS__PASSWORD: {{ .Values.redis.creds.redisPassword | trimAll "\"" }}
 
     {{/* Secret Key */}}
     AUTHENTIK_SECRET_KEY: {{ $secretKey }}

charts/stable/authentik/values.yaml

@@ -457,8 +457,6 @@ cnpg:
     enabled: true
     user: authentik
     database: authentik
-redis:
-  enabled: true
 
 metrics:
   # FIXME: Metrics do not work yet