Fix migration

SQL/migrate/V040__CustomSynths.sql

@@ -4,7 +4,7 @@
 
 CREATE TABLE `ss13_customsynths` (
     `synthname` VARCHAR(128) NOT NULL,
-    `synthckey` varchar(32) NOT NULL,
+    `synthckey` varchar(32) CHARACTER SET latin1 NOT NULL,
     `synthicon` VARCHAR(26) NOT NULL,
     `aichassisicon` VARCHAR(100) NOT NULL,
     `aiholoicon` VARCHAR(100) NOT NULL,
@@ -13,4 +13,4 @@ CREATE TABLE `ss13_customsynths` (
     CONSTRAINT `fk_ss13_custom_synths_ss13_players` FOREIGN KEY (`synthckey`) REFERENCES `ss13_player` (`ckey`) ON DELETE CASCADE ON UPDATE CASCADE
 )
 ENGINE=InnoDB
-;
+;