Update dependency Azure.Identity to 1.21.0

[dependencyupdates]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Azure.Identity (source)	1.17.1 → 1.21.0

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Release Notes

Azure/azure-sdk-for-net (Azure.Identity)

v1.21.0

Compare Source

1.21.0 (2026-04-10)

Other Changes

• All Azure.Identity types have been moved to Azure.Core and are now available through TypeForwardedTo attributes. This is a non-breaking change — existing code continues to work transparently. The library's version number now aligns with that of Azure.Core. See the Migration Guide for details.

v1.20.0

Compare Source

1.20.0 (2026-03-30)

Features Added

• Added a JSON schema segment to the NuGet package that provides IntelliSense and validation for Azure.Identity credential configuration in appsettings.json.

Breaking Changes

• AddAzureClient, AddKeyedAzureClient, and WithAzureCredential return type changed from IHostApplicationBuilder to IClientBuilder to align with the IClientBuilder composition change in System.ClientModel.

v1.19.0

Compare Source

1.19.0 (2026-03-11)

Features Added

• Added support in ClientCertificateCredential to specify a path in the form of cert:/StoreLocation/StoreName/Thumbprint to refer to a certificate in the platform certificate store - such as the Windows Certificate Store on Windows, and the KeyChain on MacOS - instead of a file on disk. For example to load a certificate from the "My" store in the "CurrentUser" location use the path cert:/CurrentUser/My/E661583E8FABEF4C0BEF694CBC41C28FB81CD870 (A community contribution, courtesy of fowl2).

Other Changes

• Updated Microsoft.Identity.Client and Microsoft.Identity.Client.Extensions.Msal dependencies to version 4.83.1.

v1.18.0

Compare Source

1.18.0 (2026-02-25)

Features Added

• Added experimental Microsoft.Extensions.Configuration and Microsoft.Extensions.DependencyInjection integration for Azure SDK clients. For details, see the Configuration and Dependency Injection documentation.

• The WorkloadIdentityCredentialOptions.IsAzureProxyEnabled property, which enables Azure Kubernetes token proxy mode, is only available in beta releases of this package.

• AzureDeveloperCliCredential now parses JSON error output from azd auth token to extract clean error messages instead of including raw JSON in exceptions. Error messages like {"type":"consoleMessage","data":{"message":"ERROR: fetching token: ..."}} are now displayed as ERROR: fetching token: ....

v1.17.2

Compare Source

1.17.2 (2026-04-15)

Other Changes

• Updated Microsoft.Identity.Client and Microsoft.Identity.Client.Extensions.Msal dependencies to version 4.83.1.

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