build(deps): bump azure-identity from 1.10.0 to 1.16.1 in /sharepoint

Bumps [azure-identity](https://github.com/Azure/azure-sdk-for-python) from 1.10.0 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_1.10.0...azure-identity_1.16.1)

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

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

sharepoint/pyproject.toml

@@ -9,7 +9,7 @@ readme = "README.md"
 python = "^3.10"
 flask = "2.2.5"
 azure-core = "1.23.1"
-azure-identity = "1.10.0"
+azure-identity = "1.16.1"
 python-dotenv = "1.0.0"
 msgraph-core = "0.2.2"
 connexion = {version = "2.14.2", extras = ["swagger-ui"]}