CLI hangs when Packagist is unreachable during version check

[JoshSalway]

InteractsWithVersions::getLatestVersion() calls file_get_contents() against Packagist with no timeout and no error handling:

$package = json_decode(file_get_contents(
    'https://packagist.org/p2/laravel/forge-cli.json'
), true);

If Packagist is unreachable or slow, the CLI hangs indefinitely. There's also no handling for file_get_contents returning false.

Should add a timeout and a try-catch that falls back to the current version.