Python dependency: Bump azure-identity

Bumps the python-minor-and-patch group with 1 update: [azure-identity](https://github.com/Azure/azure-sdk-for-python).


Updates `azure-identity` from 1.26.0 to 1.27.0
- [Release notes](https://github.com/Azure/azure-sdk-for-python/releases)
- [Commits](https://github.com/Azure/azure-sdk-for-python/compare/azure-identity_1.26.0...azure-identity_1.27.0)

---
updated-dependencies:
- dependency-name: azure-identity
  dependency-version: 1.27.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-minor-and-patch
...

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

requirements.txt

@@ -14,7 +14,7 @@
 
 Authlib==1.6.*; python_version <= '3.9'
 Authlib==1.9.*; python_version > '3.9'
-azure-identity==1.26.0
+azure-identity==1.27.0
 azure-mgmt-rdbms==10.1.1
 # Azure CLI (a common companion package on Linux distros) still pins
 # azure-mgmt-resource<25, so keep the lower bound at 24.0.0 to avoid