Logger FileSink doesn't correctly work with multiple loggers

[koudis]

Using two separate loggers to log into a single file causes the resulting logs to not be in the correct order.

Code used to initialize loggers:

#include <bringauto/logging/Logger.hpp>
#include <bringauto/logging/FileSink.hpp>

namespace log = bringauto::logging;

constexpr log::LoggerId logId1 = {.id = "id1"};
constexpr log::LoggerId logId2 = {.id = "id2"};

using Logger1 = log::Logger<logId1, log::LoggerImpl>;
using Logger2 = log::Logger<logId2, log::LoggerImpl>;

log::FileSink::Params fsParams = {"./", "log_file.log"};

Logger1::addSink<log::FileSink>(fsParams);
Logger1::init({"Logger1", log::LoggerVerbosity::Debug});

Logger2::addSink<log::FileSink>(fsParams);
Logger2::init({"Logger2", log::LoggerVerbosity::Debug});