fix: chromedriver version 2.23 no longer supports mac 32 bit

Author: brettjonesdev

lib/chromedriver/version.js

@@ -30,7 +30,7 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 'use strict';
-var FALLBACK_CHROMEDRIVER_VERSION = '2.22';
+var FALLBACK_CHROMEDRIVER_VERSION = '2.23';
 
 var request = require('request');
 
@@ -44,7 +44,7 @@ function getArchitecture() {
   var bitness = process.arch.substr(1);
   if (platform === 'darwin') {
     platform = 'mac';
-    bitness = '32';
+    bitness = '64';
   }
   if (platform === 'win32') {
     platform = 'win';