[pom] Update mockito to 2.8.9
[pom] Update mockito to 2.8.9

mayank-gokarna/jpetstore-6,grtgmc9/devopsproj,hazendaz/jpetstore-6,hazendaz/jpetstore-6,heamanth/jenkin-url,Pradeeshg/gitdemo,heamanth/jenkin-url,grtgmc9/devopsproj,mayank-gokarna/jpetstore-6,mybatis/jpetstore-6,mybatis/jpetstore-6,Pradeeshg/gitdemo,grtgmc9/devopsproj,jagadeeshboss/jenkins,heamanth/jenkin-url,Pradeeshg/gitdemo,jagadeeshboss/jenkins,jagadeeshboss/jenkins