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* Add WhisperTokenizerFast * Fixup * Up * Up * Improve tests * Update src/transformers/models/whisper/tokenization_whisper_fast.py Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com> * Keep stride in whisper pipelien test * Remove unknown token special case * Reduce vocabulary size in tests * Fix vocab size assertion * Sync copied changes from WhisperTokenizer * Skip pipeline tests * Update assertion * Remove Whisper tokenizer dependency on sentencepiece * Format --------- Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>