chore: ⬆️ Update vllm-metal (darwin) to v0.29.0 (#12007)

⬆️ Update vllm-project/vllm-metal (darwin)

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: mudler <2420543+mudler@users.noreply.github.com>

backend/python/vllm/install.sh

@@ -119,7 +119,7 @@ if [ "$(uname -s)" = "Darwin" ]; then
     # can rewrite it. Darwin therefore follows vllm-metal and can lag the Linux
     # vllm pin (requirements-cublas13-after.txt, bumped independently against
     # vllm/vllm) until vllm-metal supports a newer vLLM.
-    VLLM_METAL_VERSION="v0.28.0"
+    VLLM_METAL_VERSION="v0.29.0"
 
     # The coupled vLLM source version is whatever this vllm-metal release builds
     # against. Derive it from the PINNED tag rather than hardcoding a second value