kaffeine: update to 2.0.19

[luzpaz]

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Name

kaffeine

Version

2.0.19

Link to the release notes or announcement.

https://invent.kde.org/multimedia/kaffeine/-/blob/master/Changelog?ref_type=heads#L4

Reason for updating

Many fixes and updates in the 5 years between 2.0.18 and 2.0.19