Release 3.2.3

[kelson42]

• Secure the CI is green on git main
• Update the Changelog
• Update version
• Create a tag on git
• Make new release on Github
• Secure new version is published on https://www.npmjs.com/package/openzim/libzim
• Close current milestone and create new one incrementaly (a priori a minor version)
• Create new empty entry in Changelog (placeholder for future entries)
• Advertise this new version