Resolve "Use hand cursor (pointer) when hovering the vulnerability title on Group Security Dashboard"

What does this MR do?

This kills two birds with one <button>. It fixes the issue in #8341 (closed) and improves A11y by making the vulnerability name on the Group Security Dashboard a <button> element.

What are the relevant issue numbers?

Closes #8341 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides