test: replace forEach with for of

Author: RBrNx

test/parallel/test-webcrypto-sign-verify-hmac.js

@@ -172,10 +172,10 @@ async function testSign({ hash,
 (async function() {
   const variations = [];
 
-  vectors.forEach((vector) => {
+  for(const vector of vectors){
     variations.push(testVerify(vector));
     variations.push(testSign(vector));
-  });
+  }
 
   await Promise.all(variations);
 })().then(common.mustCall());