build: bump azure-search-documents

Bumps [azure-search-documents](https://github.com/Azure/azure-sdk-for-python) from 11.6.0b3 to 11.6.0b6.
- [Release notes](https://github.com/Azure/azure-sdk-for-python/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/search/azure-search-documents/CHANGELOG.md)
- [Commits](Azure/azure-sdk-for-python@azure-search-documents_11.6.0b3...azure-search-documents_11.6.0b6)

---
updated-dependencies:
- dependency-name: azure-search-documents
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

ClientAdvisor/Deployment/scripts/index_scripts/requirements.txt

@@ -7,7 +7,7 @@ pypdf
 msal[broker]==1.24.0b1
 azure-identity
 azure-ai-textanalytics
-azure-search-documents==11.6.0b3
+azure-search-documents==11.6.0b6
 azure-keyvault-secrets
 pandas
 pymssql