Updated to v1.5.0

Just a note that today I:

1. created a scoped token with read & write access to this CR
2. Ran docker push registry.gitlab.com/gitlab-com/support/toolbox/git-sizer:1.5.0 & :latest
3. deleted the token again

✅

---

Ideally, we could probably use this case to

• create a (monthly?) CI pipeline to automate keeping in sync with git-sizer/releases.

However, it doesn't seem like a high priority, due to customers so far also being willing to install git-sizer directly. We're spreading the (tool) love ;-D