Use GlAlert component in Dependency List

What does this MR do?

This replaces the generic alert component in the Dependency List with gitlab-ui's GlAlert component.

See #11873 (closed).

Screenshots

Context	Before	After
Incomplete alert
Job failed alert

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers