change oceanbase-ce default tag to 4.2.1 (LTS)

Author: whhe

docs/modules/databases/jdbc.md

@@ -57,7 +57,7 @@ Insert `tc:` after `jdbc:` as follows. Note that the hostname, port and database
 
 #### Using OceanBase
 
-`jdbc:tc:oceanbasece:4.2.2:///databasename`
+`jdbc:tc:oceanbasece:4.2.1-lts:///databasename`
 
 #### Using Oracle
 

modules/oceanbase/src/main/java/org/testcontainers/oceanbase/OceanBaseCEContainerProvider.java

@@ -9,7 +9,7 @@
  */
 public class OceanBaseCEContainerProvider extends JdbcDatabaseContainerProvider {
 
-    private static final String DEFAULT_TAG = "4.2.2";
+    private static final String DEFAULT_TAG = "4.2.1-lts";
 
     @Override
     public boolean supports(String databaseType) {