From: Hannu Lounento <hannu.lounento@vaisala.com>
Bug: https://github.com/Thalhammer/jwt-cpp/pull/287

Fix build with GCC 13.

--- a/include/jwt-cpp/base.h
+++ b/include/jwt-cpp/base.h
@@ -3,6 +3,7 @@
 
 #include <array>
+#include <cstdint>
 #include <stdexcept>
 #include <string>