Release 1.2.0

[benoit74]

This issue serves as a checklist for the release event.

• [x] Check that dependencies have been updated to latest version (especially python-scraper lib)
• [x] Adjust version in __about__.py to x.x.x
• [x] Update Github milestone to match the issues that will be released
• [x] Close Github milestone
• [x] Update the Changelog so that it is in line with the content of Github milestone
• [x] Push a tag on Github named vx.x.x
• [x] Create a Github release, pointing to the tag, with the Changelog of this release
• [x] Publish the Github release (this will trigger the CI, if the CI fails and you have to push a minor fix which does not justify to create a new version, you will have to delete the release and re-create it from scratch)
• [x] Check that version is published as a Github release at https://github.com/openzim/kolibri/releases
• [x] Check that version is published on Github Container Registry at https://ghcr.io/openzim/kolibri and tagged latest
• [x] Check that version is published on Pypi at https://pypi.org/project/kolibri2zim/
• [x] Create a new Github milestone with the next minor version incrementaly
• [x] Create a new Github issue attached to this milestone with this checklist inside
• [x] Create new ## [Unreleased] section in Changelog (placeholder for future entries)
• [x] Adjust version in __about__.py to `x.y.z-dev0
• [x] Inform rgaudin that a new release is ready to use so that he will update Zimfarm recipes
• [x] If needed, open a PR on Zimfarm to add support for new CLI parameters of interest

[benoit74]

No new CLI parameter, zimfarm recipes updated, I will launch only africanstorybooks and khan_fr for now, and monitor them.

[benoit74]

I fact, I did not launched africanstorybooks since no change has been made for this recipe which is OK, I will let it schedule automatically in 2 months.