Update PreparedStatementImpl.java

Author: Paultagoras

jdbc-v2/src/main/java/com/clickhouse/jdbc/PreparedStatementImpl.java

@@ -502,7 +502,8 @@ private static String encodeObject(Object x) throws SQLException {
                 listString.append("]");
 
                 return listString.toString();
-            } else if (x instanceof Map<?, ?> tmpMap) {
+            } else if (x instanceof Map) {
+                Map<?, ?> tmpMap = (Map<?, ?>) x;
                 StringBuilder mapString = new StringBuilder();
                 mapString.append("{");
                 for (Object key : tmpMap.keySet()) {