auto_update fails on deserializing release step

[Eiji7]

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Describe the bug / provide steps to reproduce it

The problem is most probably clear for devs, but the error message is "cryptic" for people trying to compile and run Zed.

[2024-04-28T01:13:33+03:00 ERROR auto_update] auto-update failed: error:error deserializing release

Caused by:
    expected value at line 1 column 1

Firstly I started to think that there is a bug in the code or the response is empty, but after I have found the source of problem it's obvious that some code has been called when it was not expected. It should be fixed (not soon I guess) or it should fail much sooner with a proper message.

The error happens in async fn update(this: Model<Self>, mut cx: AsyncAppContext) -> Result<()> which is located in src/auto_update.rs file in auto_update crate.

The following request is called: https://zed.dev/api/releases/latest?asset=Zed.dmg&os=linux&arch=x86_64

The API responds with 400 error and Failed to find a matching asset for os 'linux' and architecture 'x86_64' message.

To make sure that people would not be confused now and in the future (other platforms) there needs to be some kind of if condition on OS, so the code returns early with a proper message that specific feature is temporary not supported for specific OS/arch.

Some notes on auto-updating on Linux:

1. I guess that by default it should be disabled as this would most probably be handled by package managers anyway
2. It should be also disabled by default when compiling from source as the update in such case is as simple as git pull and same cargo run --release call
3. The auto-update feature may be considered in cases like AppImage support
4. In case you are interested I have created an issue describing how to create and maintain Gentoo ebuild repository: https://github.com/z411/trackma/issues/720

Environment

Zed: v1.0.0 (Zed Dev d2569afe662be93c926eed1aeb2b17d050ba90b0) OS: Linux 1.0.0 Memory: 62.5 GiB Architecture: x86_64

If applicable, add mockups / screenshots to help explain present your vision of the feature

No response

If applicable, attach your ~/Library/Logs/Zed/Zed.log file to this issue.

No response