build: Use appstreamcli instead of appstream-util

appstream-glib is in maintenance mode

data/meson.build

@@ -58,9 +58,9 @@ appdata_file = i18n.merge_file(
   install_dir: datadir / 'metainfo'
 )
 # Validate Appdata
-if appstream_util.found()
+if appstreamcli.found()
   test(
-    'validate-appdata', appstream_util,
+    'validate-appdata', appstreamcli,
     args: [
       'validate', '--nonet', appdata_file.full_path()
     ]

meson.build

@@ -39,7 +39,7 @@ dependency('xdg-desktop-portal', version: '>= 1.14.1')
 glib_compile_resources = find_program('glib-compile-resources', required: true)
 glib_compile_schemas = find_program('glib-compile-schemas', required: true)
 desktop_file_validate = find_program('desktop-file-validate', required: false)
-appstream_util = find_program('appstream-util', required: false)
+appstreamcli = find_program('appstreamcli', required: false)
 cargo = find_program('cargo', required: true)
 cargo_version = run_command(cargo, '--version', check: true).stdout().strip()
 message(cargo_version)