FINERACT-2206: Fix date inconsistency in SavingsInterestPostingTest

Fixed startDate from dynamic current year to hardcoded 2025 in
testPostInterestNotZero() to maintain consistent 2025 timeline.
Resolves HTTP 400 error caused by date mismatches.

Author: Monica-CodingWorld

integration-tests/src/test/java/org/apache/fineract/integrationtests/SavingsInterestPostingTest.java

@@ -340,7 +340,7 @@ public void testPostInterestNotZero() {
                     interestReceivableAccount.getAccountID().toString(), assetAccount, incomeAccount, expenseAccount, liabilityAccount);
 
             final Integer clientId = ClientHelper.createClient(requestSpec, responseSpec, "01 January 2025");
-            final LocalDate startDate = LocalDate.of(LocalDate.now(Utils.getZoneIdOfTenant()).getYear(), 1, 1);
+            final LocalDate startDate = LocalDate.of(2025, 1, 1);
             final String startStr = DateTimeFormatter.ofPattern("dd MMMM yyyy", Locale.US).format(startDate);
 
             final Integer accountId = savingsAccountHelper.applyForSavingsApplicationOnDate(clientId, productId,