SpringBoot Update system tests following release of Paketo Java buildpack 6.0.0

System tests are failing due to unexpected appearance of paketo-buildpacks/syft. It was added to the Java buildpack in https://github.com/paketo-buildpacks/java/pull/370.

Comment From: scottfrederick

In addition to the new paketo-buildpacks/syft being included, version 6.0.0 of the Java composite buildpack removes support for the BOM that the system tests verify.