4.56.0 changelog (#4331)

* 4.56.0 changelog

* Apply suggestions from code review

Co-authored-by: Den Delimarsky <53200638+localden@users.noreply.github.com>

* Apply suggestions from code review

---------

Co-authored-by: Den Delimarsky <53200638+localden@users.noreply.github.com>

Author: pmaytak

CHANGELOG.md

@@ -1,11 +1,22 @@
-4.55.0
+4.56.0
 ==========
 ### New Features
-- A user assigned managed identity can now be specified using its object ID. [4215](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/pull/4215).  
+- MSAL.NET cache extensions ([Microsoft.Identity.Client.Extensions.Msal](https://www.nuget.org/packages/Microsoft.Identity.Client.Extensions.Msal)) package has been moved to the main MSAL.NET repository (where any [new issues](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues) should be created). The package version has been increased to match the main MSAL version. Along with this move, support for .NET 4.5 and .NET Core 3.1 was removed and this package now only supports .NET Standard 2.0. Additionally, [Microsoft.Identity.Client.Extensions.Adal](https://www.nuget.org/packages/Microsoft.Identity.Client.Extensions.Adal) has been deprecated. See [3152](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/3152), [4330](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4330).
+- Added `AuthenticationResult.AuthenticationResultMetadata.Telemetry` that currently contains telemetry from the [Windows broker (WAM)](https://learn.microsoft.com/entra/msal/dotnet/acquiring-tokens/desktop-mobile/wam). See [4159](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4159).  
 
 ### Bug Fixes
+- Added throttling logic for acquiring tokens for managed identity (using `AcquireTokenForManagedIdentity` and `WithAppTokenProvider`) to prevent the throttling exceptions thrown by the managed identity endpoints. See [4196](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4196).  
+- Enabled cache synchronization by default. This helps to keep the cache consistent when a singleton confidential client application (CCA) is used with enabled external token cache serialization. The cache synchronization has a negligible performance effect when CCA is created per request. See [4268](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4268).  
+- Fixed an authority validation error in interactive flows when an Active Directory Federation Services (ADFS) authority with a tenant ID was used. See [4272](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4272).  
+- Added clarity to the Windows broker logs. See [4318](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/pull/4318).  
+
+4.55.0
+==========
+### New Features
+- A user-assigned managed identity can now be specified using its object ID. See [4215](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/pull/4215).  
 
-- `WithTenantId` now works with CIAM authorities. See [4191](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4191).  
+### Bug Fixes
+- [`WithTenantId`](https://learn.microsoft.com/dotnet/api/microsoft.identity.client.abstractapplicationbuilder-1.withtenantid?view=msal-dotnet-latest) now works with CIAM authorities. See [4191](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4191).
 - Improved the error message when cache serialization fails. See [4206](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4206).  
 - Improved logging when using the Windows broker (WAM). See [4183](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/pull/4183).