squash: adjust margin for ppc64

Author: LiviaMedeiros

test/parallel/test-fs-stat-date.mjs

@@ -19,6 +19,10 @@ await (await fsPromises.open(filepath, 'w')).close();
 
 // Date might round down timestamp
 function closeEnough(actual, expected, margin) {
+  // On ppc64, value is rounded to seconds
+  if (process.arch === 'ppc64') {
+    margin += 1000;
+  }
   assert.ok(Math.abs(Number(actual - expected)) < margin,
             `expected ${expected} ± ${margin}, got ${actual}`);
 }