Comment 7 for bug 1966142

Mailing list post about moving the location:
https://lists.freedesktop.org/archives/appstream/2022-February/000386.html

This was changed in AppStream 0.15.2:
Version 0.15.2
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Released: 2022-02-22

Features:
...
 * Support the new swcatalog catalog metadata location and add app-info fallback
...