Silence some validation errors from appstream-compose

[bbhtt]

These are too vague to provide any useful info or are covered by appstreamcli validate or the linter's own checks.

[flathubbot]

Started test build 115828

[flathubbot]

Build 115828 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/98644/org.flatpak.Builder.flatpakref

[flathubbot]

Started test build 115833

[flathubbot]

Build 115833 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/98649/org.flatpak.Builder.flatpakref

[flathubbot]

Started test build 115850

[flathubbot]

Build 115850 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/98666/org.flatpak.Builder.flatpakref

[flathubbot]

Started test build 115865

[flathubbot]

Build 115865 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/98681/org.flatpak.Builder.flatpakref

[flathubbot]

Started test build 116038

[flathubbot]

Build 116038 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/98854/org.flatpak.Builder.flatpakref