Fix wrong serilog package reference.

Author: mo-esmp

src/Serilog.Enrichers.ClientInfo/Serilog.Enrichers.ClientInfo.csproj

@@ -20,14 +20,14 @@
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.1.1" />
-    <PackageReference Include="Serilog" Version="2.9.0" />
+    <PackageReference Include="Serilog" Version="2.7.1" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.1'">
     <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
     <PackageReference Include="Serilog" Version="2.9.0" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'net452'">
     <Reference Include="System.Web" />
-    <PackageReference Include="Serilog" Version="2.9.0" />
+    <PackageReference Include="Serilog" Version="2.4.0" />
   </ItemGroup>
 </Project>