Update buildkite plugin docker-login to v2.2.0

[renovate]

This PR contains the following updates:

Package	Update	Change
docker-login	minor	v2.1.0 -> v2.2.0

---

Release Notes

buildkite-plugins/docker-login-buildkite-plugin (docker-login)

v2.2.0: (🍝 Yummy Pasta)

Compare Source

Added

• Support password-env containing newlines (#​70) @​joemiller

Upgrading

To upgrade, update your pipeline.yml files:

steps:
  - plugins:
-     docker-login#v2.1.0:
+     docker-login#v2.2.0:
        username: myuser

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.