fix style

Author: sfc-gh-bli

src/test/java/net/snowflake/client/jdbc/DataframeAstTest.java

@@ -12,7 +12,11 @@
 import java.nio.charset.StandardCharsets;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import net.snowflake.client.core.*;
+import net.snowflake.client.core.HttpClientSettingsKey;
+import net.snowflake.client.core.HttpUtil;
+import net.snowflake.client.core.SFBaseStatement;
+import net.snowflake.client.core.SFSession;
+import net.snowflake.client.core.SFStatement;
 import org.apache.http.client.methods.HttpPost;
 import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentCaptor;