Bump azure-identity

Bumps [azure-identity](https://github.com/Azure/azure-sdk-for-python) from 1.6.0 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_1.6.0...azure-identity_1.16.1)

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

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

Author: dependabot[bot]

samples/features/sql-big-data-cluster/security/encryption-at-rest-external-key-provider/kms_plugin_app/requirements.txt

@@ -2,5 +2,5 @@ pycrypto==2.6.1
 pycryptodome==3.10.1
 cryptography==42.0.4
 hvac==0.10.11
-azure-identity==1.6.0
+azure-identity==1.16.1
 azure-keyvault-keys==4.3.1