Added return void annotation to suppress deprecation warnings in Bundle::build()

[mickverm]

When version 3.2.2 of this bundle is used together with Symfony 6.3 (Symfony 6.3.0-BETA1), the following warning is logged:

Method "Symfony\Component\HttpKernel\Bundle\Bundle::build()" might add "void" as a native return type declaration in the future. Do the same in child class "Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle" now to avoid errors or add an explicit @return annotation to suppress this message.

[greg0ire]

Thanks @mickverm !

[ruudk]

Thanks for fixing this. Since Symfony 6.3 is released, it would be great to have this fix tagged.

[greg0ire]

Sure thing!