Move to no-dind renovate template and pin it

DinD in renovate has been deprecated: feat!: use default renovate install mode with s... (renovate-bot/renovate-runner!1553 - merged)

... and with that this template broke, because there is now a deprecated job being added when using the /templates/renovate-dind.gitlab-ci.yml template in the test stage which we don't declare and thus it fails.

This MR pins renovate to the latest version to prevent future unexpected failures like this and also directly includes the /templates/renovate.gitlab-ci.yml template.