Update dependency Serilog.Sinks.Async to v2

Directory.Packages.props

@@ -61,7 +61,7 @@
     <PackageVersion Include="Serilog.AspNetCore" Version="8.0.1" />
     <PackageVersion Include="Serilog.Enrichers.Thread" Version="3.1.0" />
     <PackageVersion Include="Serilog.Settings.Configuration" Version="8.0.1" />
-    <PackageVersion Include="Serilog.Sinks.Async" Version="1.5.0" />
+    <PackageVersion Include="Serilog.Sinks.Async" Version="2.0.0" />
     <PackageVersion Include="Serilog.Sinks.Console" Version="5.0.1" />
     <PackageVersion Include="Serilog.Sinks.File" Version="5.0.0" />
     <PackageVersion Include="Serilog.Sinks.Graylog" Version="3.1.1" />