The recently released version of cffi fails to install on systems with an older version of gcc. In
our case, this in the CentOS 6 test image. There is a fix but it has not yet been released.
https://foss.heptapod.net/pypy/cffi/-/issues/480
(cherry picked from commit 1db9588279)
Co-authored-by: Sam Doran <sdoran@redhat.com>
