Bump cluster-applications to v0.2.0

What does this MR do?

Related issue: #7983 (closed)

Bump cluster-applications to v0.2.0

This upgrades Helm to 2.6.1 which matches current GitLab Managed apps.

See https://gitlab.com/gitlab-org/cluster-integration/cluster-applications/-/releases#v0.2.0

Screenshots

Successful local pipeline:

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