Update Azure.Core from 1.25.0 to 1.28.0 (Azure#20889)

Co-authored-by: Beisi Zhou <zhoubeisi@gmail.com>

Author: isra-fel

src/Accounts/Accounts/ChangeLog.md

@@ -19,6 +19,7 @@
 -->
 
 ## Upcoming Release
+* Updated Azure.Core library to 1.28.0.
 * Fixed an issue that the helper message about missing modules shows up at the wrong time. [#19228]
 
 ## Version 2.11.2

src/Accounts/AssemblyLoading/ConditionalAssemblyProvider.cs

@@ -42,7 +42,7 @@ public static void Initialize(string rootPath, IConditionalAssemblyContext conte
                 // todo: add a tool to update assembly versions after replacing the assemblies. (Can it support newly introduced assemblies?)
                 // todo: consider moving the list to a standalone config file
                 #region AssemblyList
-                CreateAssembly("netcoreapp2.1", "Azure.Core", "1.25.0.0").WithPowerShellCore(),
+                CreateAssembly("netcoreapp2.1", "Azure.Core", "1.28.0.0").WithPowerShellCore(),
                 CreateAssembly("netcoreapp2.1", "Microsoft.Identity.Client", "4.49.1.0").WithPowerShellCore(),
                 CreateAssembly("netcoreapp3.1", "Microsoft.Identity.Client.Extensions.Msal", "2.23.0.0").WithPowerShellCore(),
 
@@ -64,7 +64,7 @@ public static void Initialize(string rootPath, IConditionalAssemblyContext conte
                 CreateAssembly("netstandard2.0", "System.ServiceModel.Primitives", "4.7.0.0").WithWindowsPowerShell(),
                 CreateAssembly("netstandard2.0", "System.Threading.Tasks.Extensions", "4.2.0.1").WithWindowsPowerShell(),
 
-                CreateAssembly("netfx", "Azure.Core", "1.25.0.0").WithWindowsPowerShell(),
+                CreateAssembly("netfx", "Azure.Core", "1.28.0.0").WithWindowsPowerShell(),
                 CreateAssembly("netfx", "Microsoft.Identity.Client", "4.49.1.0").WithWindowsPowerShell(),
                 CreateAssembly("netfx", "Microsoft.Identity.Client.Extensions.Msal", "2.23.0.0").WithWindowsPowerShell(),
                 CreateAssembly("netfx", "Newtonsoft.Json", "12.0.0.0").WithWindowsPowerShell(),

src/lib/netcoreapp2.1/Azure.Core.dll

@@ -21,7 +21,7 @@
     <PackageReference Include="Microsoft.Azure.PowerShell.Common.Share" Version="1.3.68-preview"/>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Azure.Core" Version="1.25.0"/>
+    <PackageReference Include="Azure.Core" Version="1.28.0"/>
   </ItemGroup>
   <ItemGroup Condition="'$(IsTestProject)' != 'true'">
     <PackageReference Include="Microsoft.ApplicationInsights" Version="2.13.1">