I wrote an Apex trigger and a test class for updating two fields on Accounts depending on some actions on the custom QA Release object. I am unable to get the code coverage reach 75% for some reason. Any inputs on what I might be doing wrong?

Apex Trigger

trigger UpdateVersionsOnAccounts on QA_Release__c (after update) {

set <id> qaRelIds = new set<id>();
set<id> accIds=new set<id>();
for(QA_Release__c qa:trigger.new) {
    qaRelIds.add(qa.Client__c);
    accIds.add(qa.Client__c);
   }
List<QA_Release__c> qaList=[SELECT Client__c,Objective__c,Client_Site_Type__c,Delivered_Date__c,Release_Version__c 
FROM QA_Release__c 
WHERE Client__c=:qaRelIds];

List<account> accList=[SELECT Id,Production_Version__c,UAT_Version__c FROM Account where Id in:accIds];

map <id,QA_Release__c> qaMap =new map<id,QA_Release__c>();

for(QA_Release__c qa:qaList)
{
qaMap.put(qa.Client__c,qa);
}


for( Account acc:accList){

system.debug('Entered Account list with new trigger collection');
    
    if(qaMap.containskey(acc.Id))  {
        
    date delDate=qaMap.get(acc.Id).Delivered_Date__c;
    string relVer=qaMap.get(acc.Id).Release_Version__c;
    string clInst=qaMap.get(acc.Id).Client_Site_Type__c;
    string objective=qaMap.get(acc.Id).Objective__c;
            
            if(delDate!=NULL)
            {
                if(objective=='New Build' && clInst=='Production')
                acc.Production_Version__c=relVer;
                else if(objective=='New Build' && clInst=='QA')
                acc.UAT_Version__c=relVer;
                }
                
        }  
        update accList; 
       } 
        

}

Test Class 
 

@isTest
public class TestUpdateVersionsOnAccounts {
static testMethod void insertnewQARelease() {

QA_Release__c qa= new QA_Release__c();
qa.Client__c='001M000000ce9DkIAI';
qa.Objective__c='New Build';
qa.Due_Date__c=datetime.NOW();
qa.Client_Site_Type__c='Production';
insert qa;
system.debug('QA Release Id is:'+qa.Name);

//Updating the QA task
qa.Status__c='Completed';
qa.Assignee__c='005C0000003SiStIAK';
qa.Release_Version__c='6.5.0.0';
update qa;

qa.Delivered_Date__c=date.TODAY();
update qa;



}
}

Result when I test coverage: