Bump azure-identity from 1.18.0 to 1.19.0

Bumps [azure-identity](https://github.com/Azure/azure-sdk-for-python) from 1.18.0 to 1.19.0.
- [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_1.18.0...azure-identity_1.19.0)

---
updated-dependencies:
- dependency-name: azure-identity
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

poetry.lock

@@ -9,7 +9,7 @@ readme = "README.md"
 [tool.poetry.dependencies]
 python = "^3.8.2"
 azure-functions = "^1.21.0"
-azure-identity = "^1.18.0"
+azure-identity = "^1.19.0"
 azure-storage-blob = "^12.23.0"
 pydpkg = "^1.9.3"