Update version to 6.8.

CMakeLists.txt

@@ -6,7 +6,7 @@ if (POLICY CMP0065)
   cmake_policy(SET CMP0065 NEW)
 endif()
 
-project(TelegramBotApi VERSION 6.7.1 LANGUAGES CXX)
+project(TelegramBotApi VERSION 6.8 LANGUAGES CXX)
 
 if (POLICY CMP0069)
   option(TELEGRAM_BOT_API_ENABLE_LTO "Use \"ON\" to enable Link Time Optimization.")

telegram-bot-api/telegram-bot-api.cpp

@@ -165,7 +165,7 @@ int main(int argc, char *argv[]) {
   auto start_time = td::Time::now();
   auto shared_data = std::make_shared<SharedData>();
   auto parameters = std::make_unique<ClientParameters>();
-  parameters->version_ = "6.7.1";
+  parameters->version_ = "6.8";
   parameters->shared_data_ = shared_data;
   parameters->start_time_ = start_time;
   auto net_query_stats = td::create_net_query_stats();