Update module github.com/juju/ratelimit to v1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/juju/ratelimit	require	major	v0.0.0-20151125201925-77ed1c8a0121 -> v1.0.2

---

Release Notes

juju/ratelimit

### [`v1.0.2`](https://togithub.com/juju/ratelimit/releases/tag/v1.0.2) [Compare Source](https://togithub.com/juju/ratelimit/compare/v1.0.1...v1.0.2) #### What's Changed - improved documentation and add the “Available” function explain. by [@​zhuCheer](https://togithub.com/zhuCheer) in [https://github.com/juju/ratelimit/pull/29](https://togithub.com/juju/ratelimit/pull/29) - Fix bonus tokens by function adjustavailableTokens ([#​31](https://togithub.com/juju/ratelimit/issues/31)) by [@​kingsamchen](https://togithub.com/kingsamchen) in [https://github.com/juju/ratelimit/pull/31](https://togithub.com/juju/ratelimit/pull/31) #### New Contributors - [@​zhuCheer](https://togithub.com/zhuCheer) made their first contribution in [https://github.com/juju/ratelimit/pull/29](https://togithub.com/juju/ratelimit/pull/29) - [@​kingsamchen](https://togithub.com/kingsamchen) made their first contribution in [https://github.com/juju/ratelimit/pull/31](https://togithub.com/juju/ratelimit/pull/31) **Full Changelog**: https://github.com/juju/ratelimit/compare/v1.0.1...v1.0.2

---

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 becomes conflicted, 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, click this checkbox.

---

This PR has been generated by Mend Renovate. View repository job log here.