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.
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.