Add support for Ubuntu 24.04 lts / noble

[hcoin]

Ubuntu has a new LTS release, 24.04 'noble'. Time to add a z-push .deb suite with 'the latest' to that repository, where presently it is missing. 2.7 builds cleanly in that release.

Thanks!

[matidau]

After we have 2.8 I'll look at packages. Also happy if someone is willing to do the builds.