springboot Upgrade to Spring Data Neumann-M2

This will also require #18621.

Comment From: wilkinsona

Let's keep this open until we've moved off snapshots.

Comment From: snicoll

🤦‍♀️

Comment From: philwebb

The upgrade causes issue because the M1 BOM is incorrect. We're waiting to see what the Data team want to do.

Comment From: philwebb

See DATACMNS-1654

Comment From: scottfrederick

The spring-data-relational dependency version can be forced with a change like this in spring-boot-dependencies:

    library('Spring Data Releasetrain', 'Neumann-M1') {
        group('org.springframework.data') {
            imports = [
                'spring-data-releasetrain'
            ]
        }
    }
    library('Spring Data Relational', '2.0.0.M1') {
        group('org.springframework.data') {
            imports = [
                'spring-data-relational'
            ]
        }
    }

Comment From: snicoll

The Spring Data team decided to ship M2 with a fix to that bom.