Update AccountingApiReportsTest.java

Author: SidneyAllen

src/test/java/com/xero/api/client/AccountingApiReportsTest.java

@@ -159,7 +159,7 @@ public void getReportAgedReceivablesByContactTest() throws IOException {
     @Test
     public void getReportBalanceSheetTest() throws IOException {
         System.out.println("@Test - getReportBalanceSheet");
-        String date = null;
+        LocalDate date = null;
         Integer periods = null;
         String timeframe = null;
         String trackingOptionID1 = null;