Bump MoonDeck to 1.12.1

[FrogTheFrog]

Update MoonDeck to 1.12.1

• Fixed an exception that happens on the OSes with newer version of python packages
• Fixed an issues where a double mouse cursor was shown when moving the mouse (and the mouse was captured in the first place)
• Fixed an issue where switching between apps is incorrectly detected as MoonDeck Runner exit (a very old bug)
• MoonDeck now perform a graceful termination on runner exit

Task Checklist

Developer

• I am the original author or an authorized maintainer of this plugin.
• I have abided by the licenses of the libraries I am utilizing, including attaching license notices where appropriate.
• Generative AI was NOT used to write a majority of the code I am submitting.

Plugin

• I have verified that my plugin works properly on the Stable update channels of SteamOS. (I have removed beta since Decky is broken on it).
• I have verified my plugin is unique or provides more/alternative functionality to a plugin already on the store.

Backend

• No: I am using a custom backend other than Python.
• No: I am using a tool or software from a 3rd party FOSS project that does not have it's dependencies statically linked.
• No: I am using a custom binary that has all of it's dependencies statically linked.

Community

• I have tested and left feedback on two other pull requests for new or updating plugins.
• I have commented links to my testing report in this PR.

Testing

• Tested by a third party on SteamOS Stable or Beta update channel.

[github-actions]

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[RodoMa92]

Looks fine for testing

[bkohler616]

Plugin Testing Report

Installed Plugins

• MoonDeck - 1.12.1-a0f43ca
• TunnelDeck - 1.0.4

Specifications

• SteamOS 3.8.16 (stable)
• Steam 1788652215 (stable)
• Decky 3.2.8 (stable)

Issues

None

Summary

Tested by installing the latest version and ensured that the double-mouse bug was patched. Also did normal usage (opening, playing, closing and sleep / resume) and did not encounter any problems.

Works as expected.