[breaking] bump transformers to 4.45.0 & improve ci (#7746)

* update ci

* fix

* fix

* fix

* fix

* fix

src/llamafactory/model/model_utils/packing.py

@@ -43,7 +43,6 @@ import torch
 import torch.nn.functional as F
 
 from ...extras import logging
-from ...extras.misc import check_version
 from ...extras.packages import is_transformers_version_greater_than
 
 
@@ -117,6 +116,5 @@ def configure_packing(model_args: "ModelArguments", is_trainable: bool) -> None:
     if not is_trainable or not model_args.block_diag_attn:
         return
 
-    check_version("transformers>=4.43.0")
     transformers.modeling_flash_attention_utils._get_unpad_data = get_unpad_data
     logger.info_rank0("Using block diagonal attention for sequence packing without cross-attention.")