Bump local block queue size to 8k elements

nano/node/local_block_broadcaster.hpp

@@ -97,7 +97,7 @@ class local_block_broadcaster
 	std::thread thread;
 
 	// TODO: Make these configurable
-	static std::size_t constexpr max_size{ 1024 };
+	static std::size_t constexpr max_size{ 1024 * 8 };
 	static std::chrono::seconds constexpr check_interval{ 30 };
 	static std::chrono::seconds constexpr broadcast_interval{ 60 };
 	static std::size_t constexpr broadcast_rate_limit{ 32 };