Add info about new Data Initialization modules

[ppapaj]

This change is a minor fix in the documentation.

I found the current phrasing a bit misleading as of Spring Boot 4.0 there's a new dependency required for automated Flyway and Liquibase migrations. If you have any suggestions about the phrasing - I'll be more than happy to adjust.

[wilkinsona]

Thanks for the proposal. Rather than adding a note, I think it would be better to update the documentation that talks about the Flyway and Liquibase dependencies:

spring-boot/documentation/spring-boot-docs/src/docs/antora/modules/how-to/pages/data-initialization.adoc

Lines 100 to 101 in e4c4283

	To automatically run Flyway database migrations on startup, add the appropriate Flyway module to your classpath.
	In-memory and file-based databases are supported by `org.flywaydb:flyway-core`.

spring-boot/documentation/spring-boot-docs/src/docs/antora/modules/how-to/pages/data-initialization.adoc

Lines 172 to 179 in e4c4283

	To automatically run Liquibase database migrations on startup, add the `org.liquibase:liquibase-core` to your classpath.
	[NOTE]
	====
	When you add the `org.liquibase:liquibase-core` to your classpath, database migrations run by default for both during application startup and before your tests run.
	This behavior can be customized by using the configprop:spring.liquibase.enabled[] property, setting different values in the `main` and `test` configurations.
	It is not possible to use two different ways to initialize the database (for example Liquibase for application startup, JPA for test runs).
	====

[ppapaj]

I updated the docs accordingly, you can take a look

[wilkinsona]

Thanks for the updates. I've left a couple of further comments for your consideration.

[wilkinsona]

There's no need for both dependencies as liquibase-core is a dependency of spring-boot-starter-liquibase.

[ppapaj]

You're absolutely right. Fixed along with the reference to the library in the note below.

[wilkinsona]

This isn't quite right. We should instruct users to add spring-boot-starter-flyway. That's all they need for in-memory and file-based DBs.

[ppapaj]

Right, fixed

[wilkinsona]

I've left a couple of comments for your consideration, @ppapaj.