Bump transactional API to 1.3.2

Author: patrick-murphy-intuit

spec/transactional.json

@@ -191,7 +191,7 @@
   },
   "swagger": "2.0",
   "info": {
-    "version": "1.3.1",
+    "version": "1.3.2",
     "title": "Mailchimp Transactional API",
     "contact": {
       "name": "API Support",