[Release][2.3.4] Prepare for release 2.3.4

Author: Carl-Zhou-CN

.gitignore

@@ -48,8 +48,6 @@ test.conf
 spark-warehouse
 *.flattened-pom.xml
 
-seatunnel-examples
-
 # vscode
 .vscode
 

pom.xml

@@ -142,7 +142,7 @@
         <checker.qual.version>3.10.0</checker.qual.version>
         <awaitility.version>4.2.0</awaitility.version>
         <e2e.dependency.skip>true</e2e.dependency.skip>
-        <skip.spotless>false</skip.spotless>
+        <skip.spotless>true</skip.spotless>
 
     </properties>