In <rdar://56920527>, CFNetwork fixed a spurious log message. To prevent this log from showing up in our infrastructure, we should surpress it.
Pull request: https://github.com/WebKit/WebKit/pull/7917
Committed 258197@main (08b7126fcf9f): <https://commits.webkit.org/258197@main> Reviewed commits have been landed. Closing PR #7917 and removing active labels.