[tc][all][murano] Retiring the Murano project

Hello everyone, As you might know, the Murano project is not active and was marked 'inactive' since 2024.1 cycle[1]. Due to a critical bug in Murano, the TC needs to pass a resolution to stop its 2024.1 release[2]. In this cycle also, this project is leaderless[3] and no maintainer stepped up to maintain it. As discussed in the Leaderless project etherpad[3], the next step is to retire the project. I'm sending this email to propose the Murano retirement and based on the response, I will proceed next. [1] https://governance.openstack.org/tc/reference/emerging-technology-and-inacti... [2] https://governance.openstack.org/tc/resolutions/20240227-remove-murano-from-... [3] https://etherpad.opendev.org/p/2024.2-leaderless#L72 -gmann