Run SpotBugs during build to flag code quality issues

[vorburger]

• https://spotbugs.github.io
• https://github.com/bazel-contrib/rules_jvm?tab=readme-ov-file#spotbugs_binary
• https://github.com/spotbugs/spotbugs/issues/2533
• https://github.com/bazel-contrib/rules_jvm/issues/123
• https://registry.bazel.build/modules/contrib_rules_jvm