Align Docker versions used for DinD in CI templates
It was noticed in citemplates review that we use different versions of docker for the DinD service in our Browser Performance and Browser Performance Testing (Kubernetes compatible) template.
It seems like it would be a good practice to standardize on which version we use in our default CI templates, at least for the two Browser Performance configurations, if not all the other templates as well.
The uniform behavior should lower the maintenance costs for GitLab team members as well ease the learning curve and volume of gotchas for customers.