Bump azure-identity in /Solutions/IllumioSaaS/Data Connectors

Bumps [azure-identity](https://github.com/Azure/azure-sdk-for-python) from 1.15.0 to 1.16.1.
- [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-identity_1.15.0...azure-identity_1.16.1)

---
updated-dependencies:
- dependency-name: azure-identity
  dependency-type: direct:production
...

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

Solutions/IllumioSaaS/Data Connectors/requirements.txt

@@ -3,5 +3,5 @@ azure-core==1.30.0
 azure-functions==1.18.0
 gzip_stream==1.2.0
 aiobotocore==2.12.1
-azure-identity==1.15.0
+azure-identity==1.16.1
 azure-monitor-ingestion==1.0.3