The docs `publish` and `dev` job are broken. The gist of it is [1]. The full stack trace
is [2]. plantuml version: 1.2021.12 [3].
This needs some fixing.
[1]
```
make[3]: Entering directory '/home/jenkins/workspace/DDOC/publish/swh-fuse/docs/images'
plantuml -Tpdf arch-container.puml
java.lang.ClassNotFoundException: org.apache.batik.apps.rasterizer.SVGConverter
```
[2] https://jenkins.softwareheritage.org/view/all/job/DDOC/job/publish/1136/console
console https://jenkins.softwareheritage.org/view/swh-draft/job/DDOC/job/dev/6845/console
[3] https://forge.softwareheritage.org/source/swh-jenkins-dockerfiles/browse/master/sphinx/Dockerfile$5