branch-3.6 txnLogCountTest use wrong version of Junit Assert import

import static org.junit.jupiter.api.Assertions.assertEquals; 

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:testCompile (default-testCompile) on project zookeeper: Compilation failure: Compilation failure: 

  

  
    
    [ERROR] /home/runner/work/zookeeper/zookeeper/zookeeper-server/src/test/java/org/apache/zookeeper/server/TxnLogCountTest.java:[21,36] package org.junit.jupiter.api does not exist

  

  
    
    [ERROR] /home/runner/work/zookeeper/zookeeper/zookeeper-server/src/test/java/org/apache/zookeeper/server/TxnLogCountTest.java:[21,1] static import only from classes and interfaces

  

  
    
    [ERROR] /home/runner/work/zookeeper/zookeeper/zookeeper-server/src/test/java/org/apache/zookeeper/server/TxnLogCountTest.java:[49,9] cannot find symbol

  

  
    
    [ERROR]   symbol:   method assertEquals(int,int)

  

  
    
    [ERROR]   location: class org.apache.zookeeper.server.TxnLogCountTest

  

  
    
    [ERROR] /home/runner/work/zookeeper/zookeeper/zookeeper-server/src/test/java/org/apache/zookeeper/server/TxnLogCountTest.java:[52,9] cannot find symbol

  

  
    
    [ERROR]   symbol:   method assertEquals(int,int)

  

  
    
    [ERROR]   location: class org.apache.zookeeper.server.TxnLogCountTest

  

  
    
    [ERROR] -> [Help 1]