🎨 Renovate: Update valkey/valkey Docker tag to v9.0.4

[SpiritLooper]

This PR contains the following updates:

Package	Update	Change
valkey/valkey	patch	9.0.3-alpine → 9.0.4-alpine

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Release Notes

valkey-io/valkey (valkey/valkey)

v9.0.4

Compare Source

Upgrade urgency SECURITY: This release includes security fixes we recommend you
apply as soon as possible.

Security fixes

• (CVE-2026-23479) Use-After-Free in unblock client flow
• (CVE-2026-25243) Invalid Memory Access in RESTORE command
• (CVE-2026-23631) Use-after-free when full sync occurs during a yielding Lua/function execution

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This PR has been generated by Mend Renovate.

[github-actions]

Here is the diff to main:

--- k8s/apps/services Kustomization: flux-system/services HelmRelease: services/grist

+++ k8s/apps/services Kustomization: flux-system/services HelmRelease: services/grist

@@ -74,7 +74,7 @@

       - name: grist-data
         persistentVolumeClaim:
           claimName: grist-data
-    - image: valkey/valkey:9.0.3-alpine
+    - image: valkey/valkey:9.0.4-alpine
       name: grist-valkey
       service: 6379
 
--- k8s/apps/services Kustomization: flux-system/services HelmRelease: services/romm

+++ k8s/apps/services Kustomization: flux-system/services HelmRelease: services/romm

@@ -20,7 +20,7 @@

   interval: 10m
   values:
     apps:
-    - image: valkey/valkey:9.0.3-alpine
+    - image: valkey/valkey:9.0.4-alpine
       name: romm-valkey
       service: 6379
     - containerSpec: