[hotfix][connector-v2][elasticsearch] Fix bulk refresh operation not locked (#3738)

Author: hailin0

seatunnel-connectors-v2/connector-elasticsearch/src/main/java/org/apache/seatunnel/connectors/seatunnel/elasticsearch/sink/ElasticsearchSinkWriter.java

@@ -103,7 +103,7 @@ public Optional<ElasticsearchCommitInfo> prepareCommit() {
     public void abortPrepare() {
     }
 
-    public void bulkEsWithRetry(EsRestClient esRestClient, List<String> requestEsList) {
+    public synchronized void bulkEsWithRetry(EsRestClient esRestClient, List<String> requestEsList) {
         try {
             RetryUtils.retryWithException(() -> {
                 if (requestEsList.size() > 0) {

seatunnel-dist/src/main/assembly/assembly-bin-ci.xml

@@ -147,6 +147,7 @@
                 <!-- Don't exclude connector-http-base, because it contains SPI files -->
                 <exclude>org.apache.seatunnel:connector-file-base</exclude>
                 <exclude>org.apache.seatunnel:connector-file-base-hadoop</exclude>
+                <exclude>org.apache.seatunnel:connector-cdc-base</exclude>
             </excludes>
             <outputDirectory>/connectors/seatunnel</outputDirectory>
             <scope>provided</scope>