fix(elsa): 解决elsa .net 8.0依赖问题

aspnet-core/services/LY.MicroService.WorkflowManagement.HttpApi.Host/LY.MicroService.WorkflowManagement.HttpApi.Host.csproj

@@ -29,6 +29,7 @@
 		<PackageReference Include="Serilog.Settings.Configuration" Version="$(SerilogSettingsConfigurationPackageVersion)" />
 		<PackageReference Include="Serilog.Sinks.Elasticsearch" Version="$(SerilogSinksElasticsearchPackageVersion)" />
 		<PackageReference Include="Serilog.Sinks.File" Version="$(SerilogSinksFilePackageVersion)" />
+		<PackageReference Include="System.Text.Json" Version="$(MicrosoftPackageVersion)" />
 		<PackageReference Include="Volo.Abp.AspNetCore.Serilog" Version="$(VoloAbpPackageVersion)" />
 		<PackageReference Include="Volo.Abp.Caching.StackExchangeRedis" Version="$(VoloAbpPackageVersion)" />
 		<PackageReference Include="Volo.Abp.AspNetCore.MultiTenancy" Version="$(VoloAbpPackageVersion)" />