Update test data to include new party and method fields

Updated JSON test files and RequestTestHelper to include the new
party field (customer) in event objects and method field (card)
in payment objects, ensuring complete test coverage.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: horgh

src/test/java/com/maxmind/minfraud/request/RequestTestHelper.java

@@ -58,6 +58,7 @@ private static Transaction makeTransaction(Email e) throws Exception {
             .event(
                 new Event
                     .Builder()
+                    .party(Event.Party.CUSTOMER)
                     .transactionId("txn3134133")
                     .shopId("s2123")
                     .time(ZonedDateTime.parse("2012-04-12T23:20:50.52Z"))
@@ -102,6 +103,7 @@ private static Transaction makeTransaction(Email e) throws Exception {
                     .build()
             ).payment(
                 new Payment.Builder()
+                    .method(Payment.Method.CARD)
                     .processor(Payment.Processor.STRIPE)
                     .wasAuthorized(false)
                     .declineCode("invalid number")

src/test/resources/test-data/full-request-email-md5.json

@@ -1,5 +1,6 @@
 {
   "event": {
+    "party": "customer",
     "transaction_id": "txn3134133",
     "shop_id": "s2123",
     "time": "2012-04-12T23:20:50.52Z",
@@ -41,6 +42,7 @@
     "delivery_speed": "same_day"
   },
   "payment": {
+    "method": "card",
     "processor": "stripe",
     "was_authorized": false,
     "decline_code": "invalid number"

src/test/resources/test-data/full-request.json

@@ -1,5 +1,6 @@
 {
   "event": {
+    "party": "customer",
     "transaction_id": "txn3134133",
     "shop_id": "s2123",
     "time": "2012-04-12T23:20:50.52Z",
@@ -41,6 +42,7 @@
     "delivery_speed": "same_day"
   },
   "payment": {
+    "method": "card",
     "processor": "stripe",
     "was_authorized": false,
     "decline_code": "invalid number"