Gracefully handle new release of lm_eval (#2326)

## Gracefully handle new release of lm_eval

## Checklist before requesting a review
- [ ] Add unit tests for this change.
- [x] Make sure all tests can pass.
- [ ] Update documents if necessary.
- [x] Lint and apply fixes to your code by running `lintrunner -a`
- [ ] Is this a user-facing change? If yes, give a description of this
change to be included in the release notes.

## (Optional) Issue link

Author: shaahji

olive/evaluator/lmeval_ort.py

@@ -13,10 +13,15 @@
 import torch.nn.functional as F
 from lm_eval.api.model import TemplateLM
 from lm_eval.api.registry import register_model
-from lm_eval.models.utils import Collator, pad_and_concat
+from lm_eval.models.utils import Collator
 from tqdm import tqdm
 from transformers import AutoConfig, AutoTokenizer
 
+try:
+    from lm_eval.models.utils_hf import pad_and_concat  # pylint: disable=ungrouped-imports
+except ImportError:
+    from lm_eval.models.utils import pad_and_concat
+
 from olive.common.onnx_io import get_io_config, get_io_dtypes, get_kv_info
 from olive.common.utils import cleanup_memory