Update test/stdlib/Synchronization/Atomics/WordPair.swift

Co-authored-by: Ben Rimmington <[email protected]>

Author: Azoy

test/stdlib/Synchronization/Atomics/WordPair.swift

@@ -49,7 +49,7 @@ suite.test("basics") {
 
 } // if #available(SwiftStdlib 6.0, *)
 
-if #available(SwiftStdlib 6.2, *) {
+if #available(SwiftStdlib 6.1, *) {
 suite.test("comparable") {
   let c0 = WordPair(first: 0, second: 0)
   let c1 = WordPair(first: 1, second: 0)