Update libcosmic

[ids1024]

Fixes #1071.

[git-f0x]

While everything seems to work visually, I seem to have very high CPU usage with this when an XWayland client is placed in a stack (causing lagginess and choppy cursor movement).
Moving the cursor while any window is in a stack also causes high CPU usage by comp. The former might be related to the latter.

[ids1024]

That's an existing issue not changed by this PR, right? There aren't too many changes to Iced or Libcosmic here, and none should have an impact like that.

Though that is something to look into regardless.

[git-f0x]

The level of CPU usage and choppiness isn't present without this PR, which is why I added the comment here. Not sure why, maybe cctk?

[ids1024]

Odd. And that's with a release build?

cctk shouldn't really impact performance like that, and moreover isn't even used in cosmic-comp, since it's for Wayland clients.

[git-f0x]

Yes, and I'm not seeing this on the fix-maximize_noble branch.

[Drakulix]

Sounds like most likely we are re-rendering the SSD too often again after the update, which is usually bad news, because of the text shaping (which is already a performance problem).

[ids1024]

I can reproduce this. IcedElementInternal::update is taking a lot longer than it should.

It seems the issue isn't iced, libcosmic, or cosmic-protocols, but actually cosmic-freedesktop-icons. Downgraded back to the previous version with cargo update cosmic-freedesktop-icons --precise bfc22d531596b57646dc47bcd70b2eb6f3152cd4 for now. So this shouldn't regress anything any more.

[git-f0x]

Yep, there aren't any perceptible regressions now.

[ids1024]

Rebased, since #1206 also updated Cargo.lock.