Draft: Switch to sbt dependencyGraphMl

What does this MR do?

• Update sbt parser to parse graphml files instead of DOT files.
• Change sbt builder to call sbt dependencyGraphMl instead of sbt dependencyDot.
• Update finder to detect graphml exports.
• Add image spec similar to gitlab-org/security-products/tests/scala-sbt!71 (closed).

See gitlab-org/gitlab#390287 (closed)

What are the relevant issue numbers?

gitlab-org/gitlab#390287 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
  • Auto-DevOps template
  • Job definition example
  • CI Templates
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer