chore(deps-dev): update huggingface-hub requirement in /backend

Updates the requirements on [huggingface-hub](https://github.com/huggingface/huggingface_hub) to permit the latest version.
- [Release notes](https://github.com/huggingface/huggingface_hub/releases)
- [Commits](huggingface/huggingface_hub@v0.19.0...v1.15.0)

---
updated-dependencies:
- dependency-name: huggingface-hub
  dependency-version: 1.13.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

backend/pyproject.toml

@@ -30,7 +30,7 @@ data-process = [
     "flower>=2.0.1",
     "nest_asyncio>=1.5.6",
     "unstructured[csv,docx,pdf,pptx,xlsx,md]==0.18.14",
-    "huggingface_hub>=0.19.0,<0.21.0"
+    "huggingface_hub>=0.19.0,<1.16.0"
 ]
 test = [
     "pytest",