Ubuntu 20.04 doesn't provide required ATK libraries (2.38). Currently, GTK-Linux-64bit-Release-Packaging-Nightly-Ubuntu2004 bot is building with ENABLE_ACCESSIBILITTY=OFF. In order to enable a11y is needed to update ATK libraries via JHBuild.
Pull request: https://github.com/webkit/webkit/pull/10910
Committed 261043@main (3aecbc80fdc2): <https://commits.webkit.org/261043@main> Reviewed commits have been landed. Closing PR #10910 and removing active labels.
<rdar://problem/106127659>