Import spring-boot-starter-parent BOM

[mraible]

Fixes jhipster/generator-jhipster#23883.

Before this change, running the following in jhipster-framework pulls in Spring Framework 6.0.11:

$ mvn dependency:tree | grep org.springframework:
[INFO] |  \- org.springframework:spring-webmvc:jar:6.0.11:compile
[INFO] |     \- org.springframework:spring-expression:jar:6.0.11:compile
[INFO] |  \- org.springframework:spring-webflux:jar:6.0.11:compile
[INFO] |  +- org.springframework:spring-core:jar:6.0.11:compile
[INFO] |  |  \- org.springframework:spring-jcl:jar:6.0.11:compile
[INFO] |  +- org.springframework:spring-beans:jar:6.0.11:compile
[INFO] +- org.springframework:spring-context-support:jar:6.0.11:compile
[INFO] |  \- org.springframework:spring-context:jar:6.0.11:compile
[INFO] |  +- org.springframework:spring-aop:jar:6.0.11:compile
[INFO] |  |  \- org.springframework:spring-jdbc:jar:6.0.11:compile
[INFO] |  |  \- org.springframework:spring-orm:jar:6.0.11:compile
[INFO] |  \- org.springframework:spring-aspects:jar:6.0.11:compile
[INFO] |  +- org.springframework:spring-test:jar:6.0.11:test

After this change, it pulls in the correct version:

$ mvn dependency:tree | grep org.springframework:
[INFO] |  \- org.springframework:spring-webmvc:jar:6.0.13:compile
[INFO] |     \- org.springframework:spring-expression:jar:6.0.13:compile
[INFO] |  \- org.springframework:spring-webflux:jar:6.0.13:compile
[INFO] |  +- org.springframework:spring-core:jar:6.0.13:compile
[INFO] |  |  \- org.springframework:spring-jcl:jar:6.0.13:compile
[INFO] |  +- org.springframework:spring-beans:jar:6.0.13:compile
[INFO] +- org.springframework:spring-context-support:jar:6.0.13:compile
[INFO] |  \- org.springframework:spring-context:jar:6.0.13:compile
[INFO] |  +- org.springframework:spring-aop:jar:6.0.13:compile
[INFO] |  |  \- org.springframework:spring-jdbc:jar:6.0.13:compile
[INFO] |  |  \- org.springframework:spring-orm:jar:6.0.13:compile
[INFO] |  \- org.springframework:spring-aspects:jar:6.0.13:compile
[INFO] |  +- org.springframework:spring-test:jar:6.0.13:test
[INFO] |  \- org.springframework:spring-web:jar:6.0.13:compile
[INFO] |  \- org.springframework:spring-tx:jar:6.0.13:compile

[DanielFran]

@mraible I pushed some changes so we can continue overwriting spring-boot dependencies with the version we defined in jhipster-dependencies.

[mraible]

@DanielFran Looks good to me. The results are the same.