mutesync: disable

[daeho-ro]

NOTE: As of November 16, 2024 the physical mütesync mute button is supported via the MuteMe application. The mütesync app will no longer receive updates and will eventually be retired. We recommend downloading the MuteMe application to use your mütesync physical button. For more information, visit this page on the MuteMe website.

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[daeho-ro]

CI passes for muteme and mutesync should be syntax only, I think this will be enough to go and waiting for reviews :)

[khipp]

I think we should deprecate mutesync first. It seems there is some friction when switching:

No, all settings will need to be reconfigured in MuteMe. Since the apps manage settings differently and MuteMe includes additional options, we recommend taking note of your preferred configurations before switching.

[khipp]

Downloading mutesync seems to no longer be possible, so we should disable the cask after all. My bad!

We should probably split the PR though, so we don't have to run ci-syntax-only for both.