fix: Remove trailing whitespace from BankAtmTest.java

- Fix Spotless formatting violation in BankAtmTest.java
- Remove trailing spaces before closing brace
- Ensure proper formatting compliance for build success

Author: jrcespedes252-hub

lesson_17/bank/bank_app/src/test/java/com/codedifferently/lesson17/bank/BankAtmTest.java

@@ -128,4 +128,4 @@ void currencyConversionTest() {
     classUnderTest.depositFunds(account1.getAccountNumber(), 1000.0, "mex");
     assertEquals(214.0, account1.getBalance());
   }
-}
+}