chore: fix unit test

Author: karenc-bq

wrapper/src/test/java/software/amazon/jdbc/hostlistprovider/AuroraHostListProviderTest.java

@@ -467,6 +467,7 @@ void testIdentifyConnectionHostInTopology() throws SQLException {
         "jdbc:someprotocol://",
         mockHostListProviderService,
         "jdbc:someprotocol://url"));
+    when(auroraHostListProvider.getCachedTopology()).thenReturn(cachedTopology);
     when(mockResultSet.next()).thenReturn(true);
     when(mockResultSet.getString(eq(1))).thenReturn("instance-a-1");
     when(auroraHostListProvider.refresh(eq(mockConnection))).thenReturn(cachedTopology);