build(deps): bump azure-ai-documentintelligence in /backend

Bumps [azure-ai-documentintelligence](https://github.com/Azure/azure-sdk-for-python) from 1.0.0 to 1.0.2.
- [Release notes](https://github.com/Azure/azure-sdk-for-python/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-python/blob/main/doc/esrp_release.md)
- [Commits](https://github.com/Azure/azure-sdk-for-python/compare/azure-ai-documentintelligence_1.0.0...azure-ai-documentintelligence_1.0.2)

---
updated-dependencies:
- dependency-name: azure-ai-documentintelligence
  dependency-version: 1.0.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

backend/requirements.txt

@@ -80,7 +80,7 @@ validators==0.34.0
 psutil
 sentencepiece
 soundfile==0.13.1
-azure-ai-documentintelligence==1.0.0
+azure-ai-documentintelligence==1.0.2
 
 pillow==11.1.0
 opencv-python-headless==4.11.0.86