Increase reduce timeout in swift-stress-tester to 2 seconds

I’ve had a few cases where parsing didn’t finish in 1 second but 2 were sufficient (in debug build of swift-syntax-test). Increase the timeout so that reduction works properly

Author: ahoppen

Sources/swift-parser-test/swift-parser-test.swift

@@ -231,7 +231,7 @@ class Reduce: ParsableCommand {
       }
 
       try process.run()
-      if sema.wait(timeout: DispatchTime.now() + .seconds(1)) == .timedOut {
+      if sema.wait(timeout: DispatchTime.now() + .seconds(2)) == .timedOut {
 #if os(Windows)
         _ = TerminateProcess(process.processHandle, 0)
 #else