chore(deps): require whisper-s2t-reborn>=1.6.3 for cuDNN-free ctranslate2

whisper-s2t-reborn 1.6.3 relaxes its ctranslate2 pin to >=4.6.2,<5, so the lock now resolves ctranslate2 to 4.8.0, which no longer loads cuDNN by default (matching the LD_LIBRARY_PATH note). ctranslate2 4.6.2 remains technically compatible if a user pins it explicitly. Bump the dependency lower bound and the import-error install hint, and re-lock (whisper-s2t-reborn 1.6.3, ctranslate2 4.8.0).

Signed-off-by: BBC, Esquire <bbc@chintellalaw.com>

Author: BBC-Esq

docling/pipeline/asr_pipeline.py

@@ -437,7 +437,7 @@ def __init__(
             except ImportError:
                 raise ImportError(
                     "whisper_s2t is not installed. Please install it via "
-                    "`pip install 'whisper-s2t-reborn[pyav]>=1.6.2'`."
+                    "`pip install 'whisper-s2t-reborn[pyav]>=1.6.3'`."
                 )
 
             self.whisper_s2t = whisper_s2t

pyproject.toml

@@ -162,7 +162,7 @@ format-audio = [
   'mlx-whisper>=0.4.3 ; python_version >= "3.10" and sys_platform == "darwin" and platform_machine == "arm64"',
   'openai-whisper>=20250625',
   'numba>=0.63.0',
-  'whisper-s2t-reborn>=1.6.2,<2 ; sys_platform != "darwin" or platform_machine != "arm64"',
+  'whisper-s2t-reborn>=1.6.3,<2 ; sys_platform != "darwin" or platform_machine != "arm64"',
 ]
 
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