This release fixes the following problems identified in 4.3.0:

• Pre-built macOS packages failed to start due to a Malformed Mach-O file error (#12224).
• extra_functionsdir (usually vendor_functions.d) and friends were not used (#12226).
• Sample config file ~/.config/fish/config.fish/ and config directories ~/.config/fish/conf.d/, ~/.config/fish/completions/ and ~/.config/fish/functions/ were recreated on every startup instead of only the first time fish runs on a system (#12230).