Tighten up TTFB threshold for projects API
Test results are below 9s - https://1k.testbed.gitlab.net/-/grafana/d/J0ysCtCWz/gpt-test-results?orgId=1&var-test_name=api_v4_projects / https://10k.testbed.gitlab.net/-/grafana/d/J0ysCtCWz/gpt-test-results?orgId=1&var-test_name=api_v4_projects
Related to gitlab-org/quality/quality-engineering/team-tasks#2071 (closed)