Fix compilation in Ubuntu 22.04 platforms (#4987) (#4992)

Signed-off-by: Carlosespicur <carlosespicur@proton.me>
(cherry picked from commit f835c2e)

Co-authored-by: Carlos Espinoza Curto <148376273+Carlosespicur@users.noreply.github.com>

include/fastrtps/utils/UnitsParser.hpp

@@ -20,6 +20,7 @@
 #define _FASTDDS_UTILS_UNITS_PARSER_HPP_
 
 #include <string>
+#include <cstdint>
 
 namespace eprosima {
 namespace fastdds {