fixed using option "unix" in Bun's fetch result in type error

[LeiCraft]

What does this PR do?

fixes a type error when using the unix option in Bun's fetch function.

Previously this code would result in an type error because the option "unix" is not defined in the types

const response = await fetch("http://localhost/info", {
    unix: "/var/run/path/to/unix.sock"
});

error TS2769: No overload matches this call.
  Overload 1 of 2, '(input: string | URL | Request, init?: RequestInit | undefined): Promise<Response>', gave the following error.
    Object literal may only specify known properties, and 'unix' does not exist in type 'RequestInit'.
  Overload 2 of 2, '(input: URL | RequestInfo, init?: RequestInit | undefined): Promise<Response>', gave the following error.
    Object literal may only specify known properties, and 'unix' does not exist in type 'RequestInit'.

How did you verify your code works?

I checked for type errors using the typescript compiler after i updated the type BunFetchRequestInit