Filter to rename the "Approved the Entry" message in an Entry note.

gv-rename-approved-entry-note-text.php

<?php // Make sure to remove this line before pasting it on your theme's functions.php

add_filter( 'gravityview/entry_notes/get_notes', 'gv_modify_notes', 10, 2 );
function gv_modify_notes( $notes, $entry_id ) {
    foreach($notes as $key => $note){
		if (strpos( $note->value, 'Approved') !== false){
		    $note->value = "Aprovada!";
            }
        if (strpos( $note->value, 'Unapproved') !== false){
		    $note->value = "Não Aprovada!";
            }
	}
	return $notes;
}