Question marks instead Hebrew characters after mysql dump and import
I think your problem is that you have exported your dump file with ANSI character set, to take a dump file using UTF8, issue your mysqldump command with option --default-character-set=utf8 and check the results. (AFAIK the same options for mysqldump work for Aurora as well)

PS : After your comments, I dug the problem a bit more. The problem comes from different configurations for character-set-system (which is utf8), character_set_server (which is latin1) with character-set-client (which is utf8mb4). Based on this link to documentation, this difference might cause issues in data input and may result in bad format in output. You can check the validity of this root cause by changing your character sets for different components.