Database migration fails with Mysql v8 (not mariadb)

Hi, while attempting to update the Cloudron castopod package, we encountered an issue that the db migration fails for version 1.6.1:

root@1ce52b9a-e753-4bbd-a7b8-a00a6822e993:/app/code# /usr/bin/php /app/code/spark migrate -all

CodeIgniter v4.4.1 Command Line Tool - Server Time: 2023-09-11 10:31:57 UTC+00:00

Running all new migrations...

[CodeIgniter\Database\Exceptions\DatabaseException]

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IF EXISTS title' at line 1

at SYSTEMPATH/Database/BaseConnection.php:646

Cloudron runs mysql v8 and it appears that https://code.castopod.org/adaures/castopod/-/blob/develop/app/Database/Migrations/2023-06-12-010000_add_full_text_search_indexes.php#L14 is not supported there: https://stackoverflow.com/questions/2480148/how-can-i-employ-if-exists-for-creating-or-dropping-an-index-in-mysql

I will see if I can provide a patch for this, if there is a chance that it gets accepted.