FIX: patch shell script

patches/patch20250130-8.0.1/patch.sh

@@ -38,7 +38,7 @@ check_version $OLD_VERSION
 
 # Get all tables, drop first line, take first column
 tables=$(mysql_execute "SHOW TABLE status where Collation='utf8mb3_unicode_ci';" -B | tail +2 | awk '{print $1}')
-for table in tables; do
+for table in $tables; do
     mysql_execute "ALTER TABLE $table CONVERT TO CHARACTER SET utf8mb4 COLLATE uca1400_as_ci;"
 done
 # mysql_execute "UPDATE data_type SET datatype=17 WHERE datatype=3"