[22285] Fix comparison in `is_update_allowed` #1397

Job	Run time
sanitizers-ci / asan_fastdds_build	6m 35s
sanitizers-ci / tsan_fastdds_test	3h 37m 34s
sanitizers-ci / asan_discovery_server_test	32m 40s
sanitizers-ci / asan_fastdds_test	4h 39m 52s
	8h 56m 41s

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