pkgs: update cosmic (#70)

* cosmic-applets: 0-unstable-2024-04-09 -> 0-unstable-2024-04-16

Diff: pop-os/cosmic-applets@631e592...25c24ce

* cosmic-comp: 0-unstable-2024-04-15 -> 0-unstable-2024-04-16

Diff: pop-os/cosmic-comp@1216cd0...5d5a510

* cosmic-settings: 0-unstable-2024-04-12 -> 0-unstable-2024-04-16

Diff: pop-os/cosmic-settings@051bce2...db1e199

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