bouncycastle-pkix is a dependency of nimbus-jose-jwt introduced in bug #1624400 and bouncycastle-pkix introduced in bug #1624409. Package has been reviewed in bug #197963 and is available in Fedora 28 and CentOS Virt SIG.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2019:1037