chore(deps): update ghcr.io/open-webui/open-webui docker tag to v0.6.7 (#96)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

clusters/homelab/apps/llm/openwebui.yaml

@@ -33,7 +33,7 @@ spec:
     spec:
       containers:
         - name: open-webui
-          image: ghcr.io/open-webui/open-webui:v0.6.6
+          image: ghcr.io/open-webui/open-webui:v0.6.7
           ports:
             - containerPort: 8080
           env: