Fix deprecation

Author: dirkvdb

include/infra/chrono.h

@@ -125,7 +125,7 @@ template <typename Clock, typename Duration>
 std::string to_string(std::chrono::time_point<Clock, Duration> tp)
 {
     std::time_t time = Clock::to_time_t(tp);
-    return fmt::format("{:%c}", fmt::localtime(time));
+    return fmt::format(fmt::runtime("{:%c}"), std::localtime(&time));
 }
 
 std::string to_string(local_time_point tp);
@@ -146,7 +146,7 @@ std::string to_string(std::string_view format, std::chrono::time_point<Clock, Du
             return fmt::format(fmt::runtime(fmt::format("{{:{}}}", format)), tp);
         } else {
             std::time_t time = Clock::to_time_t(tp);
-            return fmt::format(fmt::runtime(fmt::format("{{:{}}}", format)), fmt::localtime(time));
+            return fmt::format(fmt::runtime(fmt::format("{{:{}}}", format)), std::localtime(&time));
         }
     }
 }