Upgraded to Akka v1.3.12 and Serilog v2.8.0 (#57)

Author: irperez

src/Akka.Logger.Serilog/Akka.Logger.Serilog.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\common.props" />
 
 
@@ -7,11 +7,14 @@
     <Description>Serilog logging adapter for Akka.NET.</Description>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.6' ">1.6.1</NetStandardImplicitPackageVersion>
+    <PackageReleaseNotes>Upgraded to Akka.NET v1.3.12.
+Upgraded to Serilog v2.8.0.</PackageReleaseNotes>
+    <Version>1.3.12</Version>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Serilog" Version="2.7.1" />
-    <PackageReference Include="Akka" Version="1.3.9" />
+    <PackageReference Include="Serilog" Version="2.8.0" />
+    <PackageReference Include="Akka" Version="1.3.12" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">