⬆️ Update nvcr.io/nvidia/cuda Docker tag to v13

Author: renovate[bot]

docker/tts.Dockerfile

@@ -51,7 +51,7 @@ RUN uv sync --frozen --no-dev --no-editable --extra server --extra piper --extra
 # =============================================================================
 # CUDA target: GPU-accelerated with Kokoro TTS
 # =============================================================================
-FROM nvcr.io/nvidia/cuda:12.9.1-cudnn-runtime-ubuntu24.04 AS cuda
+FROM nvcr.io/nvidia/cuda:13.1.1-cudnn-runtime-ubuntu24.04 AS cuda
 
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
 

docker/whisper.Dockerfile

@@ -31,7 +31,7 @@ RUN uv sync --frozen --no-dev --no-editable --extra server --extra faster-whispe
 # =============================================================================
 # CUDA target: GPU-accelerated with faster-whisper
 # =============================================================================
-FROM nvcr.io/nvidia/cuda:12.9.1-cudnn-runtime-ubuntu24.04 AS cuda
+FROM nvcr.io/nvidia/cuda:13.1.1-cudnn-runtime-ubuntu24.04 AS cuda
 
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/