build(deps): update transformers requirement from <4.54,>=4.51.3 to >=4.51.3,<4.57 (#2120)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jirka Borovec <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -65,7 +65,7 @@ optional-dependencies.extra = [
   # litgpt.pretrain:
   "tensorboard>=2.14",
   "torchmetrics>=1.3.1",
-  "transformers>=4.51.3,<4.54",
+  "transformers>=4.51.3,<4.57",
   # litdata, only on non-Windows:
   "uvloop>=0.2; sys_platform!='win32'",
   # litgpt.data.prepare_slimpajama.py: