Add missing usings on tests

Author: kamilchodola

src/Nethermind/Nethermind.JsonRpc.Test/Modules/SubscribeModuleTests.cs

@@ -18,6 +18,8 @@
 using Nethermind.Core.Collections;
 using Nethermind.Core.Specs;
 using Nethermind.Core.Test.Builders;
+using Nethermind.Db;
+using Nethermind.Db.Blooms;
 using Nethermind.Facade.Eth;
 using Nethermind.Int256;
 using Nethermind.JsonRpc.Modules;
@@ -28,6 +30,7 @@
 using Nethermind.Serialization.Json;
 using Nethermind.Sockets;
 using Nethermind.Specs;
+using Nethermind.State.Repositories;
 using Nethermind.Synchronization.ParallelSync;
 using Nethermind.TxPool;
 using Newtonsoft.Json;