Add new performance issue and adjust thresholds
Updating performance issue link for api_v4_groups_issues
to a new one - Improve performance of Groups Issues List API u... (gitlab-org/gitlab#409492)
Adjusting thresholds slightly to make pipelines stable - https://10k.testbed.gitlab.net/-/grafana/d/J0ysCtCWz/gpt-test-results?orgId=1&from=now-90d&to=now&var-test_name=api_v4_groups_issues&var-test_name=api_v4_groups_vulnerability_report_default&var-test_name=api_v4_projects_issues_search&var-test_name=scenario_api_new_project_variables&var-test_name=scenario_api_update_projects