File gnsstk-fix-build-with-gcc13.patch of Package gnsstk

diff -up gnsstk-13.6.0/core/lib/GNSSCore/ObsID.hpp.aaaa gnsstk-13.6.0/core/lib/GNSSCore/ObsID.hpp
--- gnsstk-13.6.0/core/lib/GNSSCore/ObsID.hpp.aaaa	2023-06-28 17:45:26.376514814 +0200
+++ gnsstk-13.6.0/core/lib/GNSSCore/ObsID.hpp	2023-06-28 17:45:54.506261642 +0200
@@ -52,6 +52,7 @@
 #include <sstream>
 #include <string>
 #include <map>
+#include <cstdint>
 
 #include "gnsstk_export.h"
 #include "Exception.hpp"