Bump azure-storage-blob from 12.19.1 to 12.20.0 (#315)

Bumps [azure-storage-blob](https://github.com/Azure/azure-sdk-for-python) from 12.19.1 to 12.20.0.
- [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](Azure/azure-sdk-for-python@azure-storage-blob_12.19.1...azure-storage-blob_12.20.0)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 alembic==1.13.1
 azure-common==1.1.28
 azure-nspkg==3.0.2
-azure-storage-blob==12.19.1
+azure-storage-blob==12.20.0
 certifi==2024.2.2
 cffi==1.16.0
 chardet==5.2.0