Skip two flaky tests

Skip two flaky tests.

• ./spec/features/issues/user_interacts_with_awards_spec.rb https://jihulab.com/gitlab-cn/gitlab/-/jobs/4899912
• ./spec/commands/diagnostic_reports/uploader_smoke_spec.rb https://jihulab.com/gitlab-cn/gitlab/-/jobs/4899287

An issue has been created to follow up: #2011 (closed)