fix: test

Author: juherr

steve/src/test/java/de/rwth/idsg/steve/web/api/TransactionRestControllerTest.java

@@ -155,7 +155,7 @@ public void test7() {
     @Test
     @DisplayName("Sets all valid params, expected 200")
     public void test8() {
-        var start = OffsetDateTime.parse("2022-10-01T00:00Z");
+        var start = OffsetDateTime.parse("2022-10-01T00:00:00Z");
         var stop = start.plusHours(2);
 
         // given