Update the Microsoft.ApplicationInsights dependency from version 2.10.0 to 2.12.0

Author: dnewell1986

src/Serilog.Sinks.ApplicationInsights/Serilog.Sinks.ApplicationInsights.csproj

@@ -29,7 +29,7 @@
 
   <ItemGroup>
     <PackageReference Include="Serilog" Version="2.8.0" />
-    <PackageReference Include="Microsoft.ApplicationInsights" Version="2.10.0" />
+    <PackageReference Include="Microsoft.ApplicationInsights" Version="2.12.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net45' ">