chore(deps): bump azure-keyvault-secrets from 4.8.0 to 4.9.0

Bumps [azure-keyvault-secrets](https://github.com/Azure/azure-sdk-for-python) from 4.8.0 to 4.9.0.
- [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-keyvault-secrets_4.8.0...azure-keyvault-secrets_4.9.0)

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

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

pyproject.toml

@@ -11,7 +11,7 @@ maintainers = [
 ]
 dependencies = [
     "Authlib==1.3.2",
-    "azure-keyvault-secrets==4.8.0",
+    "azure-keyvault-secrets==4.9.0",
     "azure-identity==1.19.0",
     "Django==5.1.2",
     "django-csp==3.8",