Increase MR discussions TTFB threshold
The MR adjusts TTFB threshold for web_project_merge_request_discussions
after a slight degradation as noted in gitlab-org/gitlab#209784 (comment 483572183).
The MR adjusts TTFB threshold for web_project_merge_request_discussions
after a slight degradation as noted in gitlab-org/gitlab#209784 (comment 483572183).