jobs/swh-docs: Bump Python from 3.7 to 3.11
This should fix recent doc build issues as some SWH package dependencies dropped Python 3.7 support.
It is also bumping sphinx from 5.3 to 7.2.
Staging instance, all changes can be removed at any time
This should fix recent doc build issues as some SWH package dependencies dropped Python 3.7 support.
It is also bumping sphinx from 5.3 to 7.2.