Update to 25.08 runtime + move all LilyPond modules to a separate yaml file

[fedelibre]

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[fedelibre]

The last failure requires fixes in denemo source code.
I'm in touch with the developer and I'll see if these can be included in the next release.

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flatpak install --user https://dl.flathub.org/build-repo/289960/org.denemo.Denemo.flatpakref

Built for aarch64 and x86_64 architectures.

[fedelibre]

The last failure requires fixes in denemo source code.
I'm in touch with the developer and I'll see if these can be included in the next release.

No, the version in master builds fine.
We just need a new Denemo release, which should be close IIUC.

I'll set this PR as draft and wait for the release.