chore: update CozyStack upstream to 3705092

Auto-updated CozyStack dependency on 2026-03-16

Upstream commit: 3705092
Upstream date: 2026-03-16T08:38:53Z
Patch compatibility: failure

Author: github-actions[bot]

.github/workflows/build-talos-images.yml

@@ -41,7 +41,8 @@ on:
       cozystack_commit:
         description: 'CozyStack upstream commit (for reproducible builds)'
         required: false
-        default: 'HEAD'  # Use latest main
+        default: '3705092'  # Use latest main
+        # Auto-updated 2026-03-16 to upstream 3705092
       extension_variant:
         description: 'Extension variant to build'
         required: false