Comment 23 for bug 1828293

Looks like Rocky UCA hasn't been updated with 1.5.0-0ubuntu3.1 yet:

http://ubuntu-cloud.archive.canonical.com/ubuntu/dists/bionic-updates/rocky/main/binary-amd64/Packages

Package: python3-neutron-fwaas-dashboard
Source: neutron-fwaas-dashboard
Priority: optional
Section: python
Installed-Size: 615
Maintainer: Ubuntu Developers <email address hidden>
Architecture: all
Version: 1.5.0-0ubuntu3~cloud0

apt policy python3-neutron-fwaas-dashboard
python3-neutron-fwaas-dashboard:
  Installed: (none)
  Candidate: 1.5.0-0ubuntu3~cloud0
  Version table:
     1.5.0-0ubuntu3~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/rocky/main amd64 Packages