`require(nil).to(beNil())` will incorrectly fail & throw an error.

[younata]

This test fails, with the contradictory error "expected to be nil, got <nil>":

func testRequireNil() throws {
    expect {
        try require(nil as Int?).to(beNil())
    }.toNot(throwError())
}

Which ultimately comes down to us being unable to unwrap nil (because... it's nil!) in (Sync|Async)Requirement.verify (highlighted is the sync variant, but the Async one has the same logic and therefore, same issue): https://github.com/Quick/Nimble/blob/v13.2.1/Sources/Nimble/Requirement.swift#L88-L95

So... that's fun and unexpected.