chore: bump server version to 29.0.0.4 to trigger migrations

[ShGKme]

• To trigger migration. Probably after Lazy grouping within IAppConfig #41755

To reproduce try:

• /index.php/settings/admin/overview
• Change the default color in Admin settings/Theming

Technical details
Remote Address: 46.5.136.98
Request ID: 7mOVt3XNCTMFZOQblIBJ
Type: OC\DB\Exceptions\DbalException
Code: 1054
Message: An exception occurred while executing a query: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'lazy' in 'field list'
File: /var/www/html/lib/private/DB/Exceptions/DbalException.php
Line: 71

Trace
#0 /var/www/html/lib/private/DB/QueryBuilder/QueryBuilder.php(328): OC\DB\Exceptions\DbalException::wrap(Object(Doctrine\DBAL\Exception\InvalidFieldNameException))
#1 /var/www/html/lib/private/AppConfig.php(739): OC\DB\QueryBuilder\QueryBuilder->executeStatement()
#2 /var/www/html/lib/private/AppConfig.php(1277): OC\AppConfig->setTypedValue('theming', 'color', '#b6469d', false, 2)
#3 /var/www/html/lib/private/AllConfig.php(208): OC\AppConfig->setValue('theming', 'color', '#b6469d')
#4 /var/www/html/apps/theming/lib/ThemingDefaults.php(455): OC\AllConfig->setAppValue('theming', 'color', '#b6469d')
#5 /var/www/html/apps/theming/lib/Controller/ThemingController.php(174): OCA\Theming\ThemingDefaults->set('color', '#b6469d')
#6 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(232): OCA\Theming\Controller\ThemingController->updateStylesheet('color', '#b6469d')
#7 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(138): OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\Theming\Controller\ThemingController), 'updateStyleshee...')
#8 /var/www/html/lib/private/AppFramework/App.php(184): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\Theming\Controller\ThemingController), 'updateStyleshee...')
#9 /var/www/html/lib/private/Route/Router.php(315): OC\AppFramework\App::main('OCA\\Theming\\Con...', 'updateStyleshee...', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#10 /var/www/html/lib/base.php(1069): OC\Route\Router->match('/apps/theming/a...')
#11 /var/www/html/index.php(39): OC::handleRequest()
#12 {main}

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)