Draft: Resolve "Release 2.5"

Closes #585 (closed)

• Check that all CI jobs run without errors on the latest branch
• Close all remaining issues on the current milestone
• Update the Changelog
• Update the [AUTHORS.md] list
• Write the announcement in NEWS.md
• Rebuild the docker image latest and upload it (make docker_image docker_push)
• Close the current milestone and open the next one
• Rebase the stable branch from latest
• Rebuild the docker image stable and upload it (DOCKER_TAG=stable make docker_image docker_push)
• Tag the latest branch
• Build the docker image x.y.z and upload it (DOCKER_TAG=x.y.z make docker_image docker_push)
• Create a branch x.y.z based on stable
• Launch a new pipeline on the x.y.z branch
• Once the pipeline is done, trigger the deploy task to publish the packages
• Update the upstream repositories
• On the Tags page, click on Create a Release
• Bump to the new version number in Cargo.toml
• Publish the announcement