fix: Keep spdlog loggers valid between tests (#2614)

tests/unit/Main.cpp

@@ -17,6 +17,7 @@
 */
 //==============================================================================
 
+#include "util/LoggerFixtures.hpp"
 #include "util/TerminationHandler.hpp"
 
 #include <gtest/gtest.h>
@@ -27,5 +28,7 @@ main(int argc, char* argv[])
     util::setTerminationHandler();
     testing::InitGoogleTest(&argc, argv);
 
+    LoggerFixture::init();
+
     return RUN_ALL_TESTS();
 }