[Feature Request]: Upgrading doctrine/dbal Connection handling

Nobody has claimed this yet.

### Is your feature request related to a problem? Please describe.

When I use this package and run my tests, I'm getting mutliple deprecation messages by the package: doctrine/dbal

> 34x: Subscribing to onSchemaCreateTable events is deprecated. (AbstractPlatform.php:2145 called by AbstractPlatform.php:2064, https://github.com/doctrine/dbal/issues/5784, package doctrine/dbal)

> 1x: Not configuring a schema manager factory is deprecated. Use Doctrine\DBAL\Schema\DefaultSchemaManagerFactory which is going to be the default in DBAL 4. (Connection.php:221 called by DriverManager.php:197, https://github.com/doctrine/dbal/issues/5812, package doctrine/dbal)

> 1x: Public access to Connection::connect() is deprecated. (Connection.php:366 called by ORMDatabaseTool.php:180, https://github.com/doctrine/dbal/issues/4966, package doctrine/dbal)

> 1x: Connection::getSchemaManager() is deprecated, use Connection::createSchemaManager() instead. (Connection.php:1697 called by ORMDatabaseTool.php:182, https://github.com/doctrine/dbal/issues/4515, package doctrine/dbal)

This only ocurrs when I use stuff made by this package like:

```
$databaseTool = static::getContainer()->get(DatabaseToolCollection::class)->get();

$databaseTool->loadAliceFixture(
```

### Describe alternatives you've considered

-

### Additional context

* Symfony Version: 7.0.*
* liip/test-fixtures-bundle: 2.7.2
* liip/functional-test-bundle: 4.11.0
* PHPUnit: 9.5
* doctrine/doctrine-bundle 2.11
* PHP Version 8.3
* MariaDB: 10.6.16

Hope this helps as additional context.

The test itself did nothing in this case. I purged everything and just run the code like I mentioned above and then got those deprecation messages.

Reproduce the deprecations with DatabaseToolCollection::get() and loadAliceFixture(), then inspect the call sites named in the report: Connection.php, DriverManager.php, AbstractPlatform.php, and ORMDatabaseTool.php. Check how the bundle configures Doctrine DBAL and verify that the listed deprecations no longer appear with Symfony 7, DBAL, and doctrine/doctrine-bundle versions supported by the project.

Written by the indexing model from the issue text.