Add controlnet-aux dependency so frame-openpose runs in local mode

The OpenPose UDF needs controlnet-aux, which was pinned only in its worker
manifest (installed on remote workers in enterprise mode). Local Ray shares the
driver's env, so `frame-openpose --mode local` failed with
`ModuleNotFoundError: No module named 'controlnet_aux'`. Every other model UDF's
deps (torch, open-clip, transformers, av, pypdf) are already top-level, so this
was the one gap. Verified frame-openpose now completes locally on CPU.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: justinrmiller

pyproject.toml

@@ -35,6 +35,7 @@ dependencies = [
     # >=6: the UI is built and tested against the Gradio 6 API (4.x/5.x differ).
     "gradio>=6",
     "textual>=1.0.0",
+    "controlnet-aux>=0.0.7",
 ]
 
 [project.scripts]