build: Replace appstream-utils with appstreamcli

[Rirusha]

appstream-utils did not allow the tests to pass, because of the images padding. Flathub has changed the utility for checking appdata files.

Link: https://github.com/flathub-infra/flatpak-builder-lint/commit/bbfc701d87c53d6336febf6d4e1121dad424f367

Tests with appstream-utils:

data/io.github.diegoivanme.flowtime.appdata.xml: FAILED:
• attribute-invalid     : <screenshot> width (565) too small [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/01.png] minimum is 624px
• style-invalid         : <image> has vertical padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/01.png]
• style-invalid         : <image> has horizontal padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/01.png]
• attribute-invalid     : <screenshot> width (565) too small [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/02.png] minimum is 624px
• style-invalid         : <image> has vertical padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/02.png]
• style-invalid         : <image> has horizontal padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/02.png]
• attribute-invalid     : <screenshot> width (565) too small [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/03.png] minimum is 624px
• style-invalid         : <image> has vertical padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/03.png]
• style-invalid         : <image> has horizontal padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/03.png]
• attribute-invalid     : <screenshot> width (547) too small [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/04.png] minimum is 624px
• style-invalid         : <image> has vertical padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/04.png]
• style-invalid         : <image> has horizontal padding [https://raw.githubusercontent.com/Diego-Ivan/Flowtime/main/data/screenshots/04.png]