upgrade(open-webui): Update to v0.8.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

open-webui/manifest.yaml

@@ -3,13 +3,13 @@ is: open-webui
 description: Open WebUI is a comprehensive, open-source web interface for AI models.
   Features a user-friendly design, supports various LLM runners, and operates entirely
   offline. Perfect for creating a ChatGPT-like experience with local or hosted models.
-version: 0.7.2
+version: 0.8.0
 icon: https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/open-webui.svg
 requires: []
 defaultConfig:
   namespace: open-webui
   externalDnsDomain: '{{ .cloud.domain }}'
-  image: ghcr.io/open-webui/open-webui:v0.7.2
+  image: ghcr.io/open-webui/open-webui:v0.8.0
   port: 8080
   storage: 10Gi
   domain: chat.{{ .cloud.domain }}