tests: Change 'encoding' to 'output' in createHash test

Author: jankapunkt

test/unit/utils/crypto-util_test.js

@@ -4,7 +4,7 @@ require('chai').should();
 describe(cryptoUtil.createHash.name, function () {
   it('creates a hash by given algorithm', function () {
     const data = 'client-credentials-grant';
-    const hash = cryptoUtil.createHash({ data, encoding: 'hex' });
+    const hash = cryptoUtil.createHash({ data, output: 'hex' });
     hash.should.equal('072726830f0aadd2d91f86f53e3a7ef40018c2626438152dd576e272bf2b8e60');
   });
   it('should throw if data is missing', function () {