Adds snowplough tracking to the GSD filters

What does this MR do?

Fires off a tracking event every time someone changes a filter on the group security dashboard.

• Category: group:security:dashboard:show (from document.body.dataset.page)
• Action: set_filter
• Label: payload.filterId e.g. report_type
• Value: payload.optionId e.g. dependency_scanning

What are the relevant issue numbers?

Closes #9101 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• EE specific content should be in the top level /ee folder
• For a paid feature, have we considered GitLab.com plans, how it works for groups, and is there a design for promoting it to users who aren't on the correct plan?
• Security reports checked/validated by reviewer