Slim down embedded dependencies

[labkey-adam]

Rationale

Some dependencies in the embedded jar were included multiple times and others appear to be unnecessary. This removes 32 (~12MB) redundant, conflicting, or unneeded jars.

It's possible that one or more of these 32 jars is actually needed; @ankurjuneja may have more history here. I also plan to run BVTs and Dailies, and will merge after 24.12 branching to provide more bake time.

It's also possible we could eliminate a few more jars, but this PR seems like a good starting point.

Changes

• Make tomcat-embed-core a dependency for bootstrap and stop pulling in redundant Tomcat dependencies there
• Exclude spring-boot-starter-json: seems unused and pulls in an old version of Jackson
• Exclude jakarta.annotation-api: already present in tomcat-annotations-api
• Exclude tomcat-juli: already present in tomcat-embed-core
• Remove spring-boot-starter-actuator: seems unused
• Remove spring-boot-starter-validation: eliminating a single @NotNull annotation lets us remove this and its dependencies
• Migrate a single use of org.jboss.logging.Logger (??) to log4j