Comment 22 for bug 1951470

successfully verified on hirsute:

ubuntu@hwe0007:~$ lsb_release -cs
hirsute
ubuntu@hwe0007:~$ sudo apt-cache policy libqt5webkit5
libqt5webkit5:
  Installed: (none)
  Candidate: 5.212.0~alpha4-12ubuntu0.21.04.1
  Version table:
     5.212.0~alpha4-12ubuntu0.21.04.1 500
        500 http://us.ports.ubuntu.com/ubuntu-ports hirsute-proposed/universe s390x Packages
     5.212.0~alpha4-12 500
        500 http://ports.ubuntu.com/ubuntu-ports hirsute/universe s390x Packages
ubuntu@hwe0007:~$ sudo apt install libqt5webkit5 wkhtmltopdf
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
  libqt5webkit5 wkhtmltopdf
0 upgraded, 2 newly installed, 0 to remove and 11 not upgraded.
Need to get 10.4 MB of archives.
After this operation, 48.5 MB of additional disk space will be used.
Get:1 http://us.ports.ubuntu.com/ubuntu-ports hirsute-proposed/universe s390x libqt5webkit5 s390x 5.212.0~alpha4-12ubuntu0.21.04.1 [10.2 MB]
Get:2 http://ports.ubuntu.com/ubuntu-ports hirsute/universe s390x wkhtmltopdf s390x 0.12.6-1 [168 kB]
Fetched 10.4 MB in 0s (24.4 MB/s)
Selecting previously unselected package libqt5webkit5:s390x.
(Reading database ... 101740 files and directories currently installed.)
Preparing to unpack .../libqt5webkit5_5.212.0~alpha4-12ubuntu0.21.04.1_s390x.deb ...
Unpacking libqt5webkit5:s390x (5.212.0~alpha4-12ubuntu0.21.04.1) ...
Selecting previously unselected package wkhtmltopdf.
Preparing to unpack .../wkhtmltopdf_0.12.6-1_s390x.deb ...
Unpacking wkhtmltopdf (0.12.6-1) ...
Setting up libqt5webkit5:s390x (5.212.0~alpha4-12ubuntu0.21.04.1) ...
Setting up wkhtmltopdf (0.12.6-1) ...
Processing triggers for man-db (2.9.4-2) ...
Processing triggers for libc-bin (2.33-0ubuntu5) ...
Scanning processes...
Scanning candidates...
Scanning linux images...

Restarting services...
 systemctl restart packagekit.service

No containers need to be restarted.

No user sessions are running outdated binaries.
ubuntu@hwe0007:~$ sudo apt-cache policy libqt5webkit5
libqt5webkit5:
  Installed: 5.212.0~alpha4-12ubuntu0.21.04.1
  Candidate: 5.212.0~alpha4-12ubuntu0.21.04.1
  Version table:
 *** 5.212.0~alpha4-12ubuntu0.21.04.1 500
        500 http://us.ports.ubuntu.com/ubuntu-ports hirsute-proposed/universe s390x Packages
        100 /var/lib/dpkg/status
     5.212.0~alpha4-12 500
        500 http://ports.ubuntu.com/ubuntu-ports hirsute/universe s390x Packages
ubuntu@hwe0007:~$ wkhtmltopdf --enable-local-file-access index.html test.pdf
Loading page (1/2)
Printing pages (2/2)
Done
ubuntu@hwe0007:~$ ls -l ./test.pdf
-rw-rw-r-- 1 ubuntu ubuntu 1339 Nov 30 20:33 ./test.pdf
ubuntu@hwe0007:~$