dependabot python package: update azure-mgmt-keyvault requirement

Updates the requirements on [azure-mgmt-keyvault](https://github.com/Azure/azure-sdk-for-python) to permit the latest version.
- [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-mgmt-keyvault_10.3.1...azure-mgmt-keyvault_11.0.0)

---
updated-dependencies:
- dependency-name: azure-mgmt-keyvault
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -15,7 +15,7 @@ azure-mgmt-resourcegraph = "^8.0.0"
 pynacl = "^1.5.0"
 requests = "^2.32.3"
 pytz = "^2025.1"
-azure-mgmt-keyvault = "^10.3.1"
+azure-mgmt-keyvault = "^11.0.0"
 
 
 [build-system]