fix: clang-tidy 2

Author: milsanore

src/binance/Config.cpp

@@ -18,7 +18,7 @@ std::string getEnvOrThrow(const char *key) {
   if (const char *val = std::getenv(key)) {
     spdlog::info(
         std::format("fetched environment variable, key [{}], value [{}]", key, val));
-    return std::string(val);
+    return {val};
   }
   throw std::runtime_error(std::format("envvar not defined, key [{}]", key));
 };