Upgraded to .NET Core 3.1.

Author: jernejk

AspNetCoreSerilogExample.Web/AspNetCoreSerilogExample.Web.csproj

@@ -1,16 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
   </PropertyGroup>
 
   <ItemGroup>
     <!-- Serilog dependencies -->
-    <PackageReference Include="Serilog" Version="2.9.0" />
-    <PackageReference Include="Serilog.AspNetCore" Version="3.2.0" />
+    <PackageReference Include="Serilog" Version="2.10.0" />
+    <PackageReference Include="Serilog.AspNetCore" Version="3.4.0" />
     <PackageReference Include="Serilog.Enrichers.Environment" Version="2.1.3" />
-    <PackageReference Include="Serilog.Exceptions" Version="5.4.0" />
+    <PackageReference Include="Serilog.Exceptions" Version="5.6.0" />
     <PackageReference Include="Serilog.Extensions.Logging" Version="3.0.1" />
     <PackageReference Include="Serilog.Settings.Configuration" Version="3.1.0" />
     <PackageReference Include="Serilog.Sinks.Async" Version="1.4.0" />