Bump Microsoft.Identity.Client from 4.8.2 to 4.9.0

Bumps [Microsoft.Identity.Client](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet) from 4.8.2 to 4.9.0.
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/releases)
- [Changelog](https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/blob/master/changelog.txt)
- [Commits](AzureAD/microsoft-authentication-library-for-dotnet@4.8.2...4.9.0)

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

src/SignClient/SignClient.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="3.1.2" />
     <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.2" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.2" />
-    <PackageReference Include="Microsoft.Identity.Client" Version="4.8.2" />
+    <PackageReference Include="Microsoft.Identity.Client" Version="4.9.0" />
     <PackageReference Include="Refit" Version="5.0.23" />
   </ItemGroup>