SongRec

Fix build script output

Make the "cargo fmt" command in build.rs non-mandatory to succeed in order to cope with older distributions

Fix the binary package specification for the PPA distribution

Fix commit 2ea2f45 (related #274)

Revert back the compatibility baseline to Ubuntu 24.04 as the runner image for 26.04 may not be available anytime soon (see https://github.com/actions/runner-images/issues/13964#issuecomment-4360396351 + related #274)