This issue is used to consolidate the point that needs to be updated in the release process, notably due to the adoption of towncrier.

RC release process:

• when requesting to bump the version number of dev0 in main, we need to request changing the root RST file targeted by towncrier in the pyproject.toml file.
• add that we should generate the changelog with towncrier: Generate the changelog with towncrier but keep the fragments: towncrier build --keep --version 1.6.0 (we should adapat the version number)