Update migrate_langs in projects/release/update_responses_config.yml

boklmrequested to merge
boklm/tor-browser-build:update-update_responses_config.yml-migrate_langs into main

This reverts the changes from 3a12465d to that file.

Since we changed in a3f49129 the default locale to be ALL, users of any unkwnown locale should now be redirected to ALL, without the need for setting migrate_langs for those locales.

Part of #40627 (closed).

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