Update dependency System.Linq.Async to 6.0.3

Directory.Packages.props

@@ -79,7 +79,7 @@
     <PackageVersion Include="Swashbuckle.AspNetCore.ReDoc" Version="6.5.0" />
     <PackageVersion Include="Swashbuckle.AspNetCore" Version="6.2.3" />
     <PackageVersion Include="System.Globalization" Version="4.3.0" />
-    <PackageVersion Include="System.Linq.Async" Version="6.0.1" />
+    <PackageVersion Include="System.Linq.Async" Version="6.0.3" />
     <PackageVersion Include="System.Text.Encoding.CodePages" Version="9.0.6" />
     <PackageVersion Include="System.Text.Json" Version="9.0.6" />
     <PackageVersion Include="System.Threading.Tasks.Dataflow" Version="9.0.6" />