Fix push to HF hub

[mnickkk]

tokenizer is undefined, we should use processor from that cell instead:

model, processor = FastModel.from_pretrained(
    model_name = "unsloth/csm-1b",
    max_seq_length= 2048, # Choose any for long context!
    dtype = None, # Leave as None for auto-detection
    auto_model = CsmForConditionalGeneration,
    load_in_4bit = False, # Select True for 4bit - reduces memory usage
)