Accept new baselines

Author: ahejlsberg

tests/baselines/reference/genericRestParameters1.js

@@ -309,7 +309,7 @@ declare function f16<A, B>(a: A, b: B): A | B;
 declare let x20: number;
 declare let x21: string;
 declare let x22: string | number;
-declare let x23: unknown;
+declare let x23: string | number;
 declare let x24: string | number;
 declare let x30: string;
 declare let x31: string | number;

tests/baselines/reference/genericRestParameters1.types

@@ -462,8 +462,8 @@ let x22 = call(f15, "hello", 42);  // string | number
 >42 : 42
 
 let x23 = call(f16, "hello", 42);  // unknown
->x23 : unknown
->call(f16, "hello", 42) : unknown
+>x23 : string | number
+>call(f16, "hello", 42) : string | number
 >call : <T extends unknown[], U>(f: (...args: T) => U, ...args: T) => U
 >f16 : <A, B>(a: A, b: B) => A | B
 >"hello" : "hello"