Bump azure-storage-blob from 12.19.0 to 12.28.0

Bumps [azure-storage-blob](https://github.com/Azure/azure-sdk-for-python) from 12.19.0 to 12.28.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-python/releases)
- [Commits](Azure/azure-sdk-for-python@azure-storage-blob_12.19.0...azure-storage-blob_12.28.0)

---
updated-dependencies:
- dependency-name: azure-storage-blob
  dependency-version: 12.28.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/requirements.txt

@@ -7,7 +7,7 @@ azure-search-documents==11.6.0
 azure-ai-inference==1.0.0b6
 azure-ai-projects>=2.0.0b1
 azure-ai-agents>=1.1.0
-azure-storage-blob==12.19.0
+azure-storage-blob==12.28.0
 openai==1.54.0
 fastapi==0.115.0
 uvicorn[standard]==0.32.0