Missing 0.7.12 release metadata

[AsciiWolf]

AppStream metadata for the 0.7.12 release still appear to be missing. This is the last one:

https://github.com/bazaar-org/bazaar/blob/main/data/io.github.kolunmi.Bazaar.metainfo.xml.in#L76

[renner0e]

This was intentional, it was a release for a single Bugfix introduced in the prior version.