update Gremit dep version to the latest one

Author: AndrewKostousov

GroBuf.Tests/IntegrationTest.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Threading;
 
 using GroBuf.DataMembersExtracters;
@@ -107,8 +107,6 @@ public void TestWithGarbageCollection()
         [Ignore("Is used for debugging")]
         public void TestWithGarbageCollection2()
         {
-            const int numberOfMessages = 1000000;
-
             stop = false;
             var thread = new Thread(Collect);
             thread.Start();

GroBuf.sln

@@ -7,14 +7,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GroBuf", "GroBuf\GroBuf.csp
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GroBuf.Tests", "GroBuf.Tests\GroBuf.Tests.csproj", "{7AC4F6AF-43D0-497A-90A5-515BF9B1313B}"
 EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{E88E852C-5259-47AD-BE15-797A515D8F1C}"
-	ProjectSection(SolutionItems) = preProject
-		Directory.Build.props = Directory.Build.props
-		Directory.Build.targets = Directory.Build.targets
-		global.json = global.json
-		nuget.config = nuget.config
-	EndProjectSection
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU

GroBuf/GroBuf.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="GrEmit" Version="2.2.3" />
+    <PackageReference Include="GrEmit" Version="2.3.6" />
     <PackageReference Include="Mono.Reflection.Core" Version="1.1.1" />
   </ItemGroup>