Fix build failure

Author: inv-jishnu

data-loader/cli/src/test/java/com/scalar/db/dataloader/cli/command/dataexport/ExportCommandTest.java

@@ -1,6 +1,7 @@
 package com.scalar.db.dataloader.cli.command.dataexport;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;