build(deps): bump litdata from 0.2.45 to 0.2.49 (#2068)

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

Author: dependabot[bot]

pyproject.toml

@@ -52,7 +52,7 @@ optional-dependencies.extra = [
   "datasets>=2.18",
   # download:
   "huggingface-hub[hf-transfer]>=0.21",
-  "litdata==0.2.45",
+  "litdata==0.2.49",
   # litgpt.deploy:
   "litserve>0.2",
   "lm-eval>=0.4.2",