Migrate testdata to new lambda syntax

compiler/testData/codegen/box/functions/localFunctions/kt2895.kt

@@ -2,7 +2,7 @@ fun outer() {
     fun inner(i: Int) {
         if (i > 0){
             {
-                (it: Int) -> inner(0) // <- invocation of literal itself is generated instead
+                it: Int -> inner(0) // <- invocation of literal itself is generated instead
             }.invoke(1)
         }
     }