chore(deps): update dependency @gitlab/ui to v20.13.0

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui (source)	dependencies	minor	20.12.2 -> 20.13.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

---

Release Notes

gitlab-org/gitlab-ui

v20.13.0

Compare Source

Features

• GlSkeletonLoading: export as GlDeprecatedSkeletonLoading (8f683ff)

20.12.2 (2020-09-01)

Bug Fixes

• dropdown: Correct dropdown header padding (d527f4e)

20.12.1 (2020-08-31)

Bug Fixes

• GlToggle: prevent default on click (d29331f)

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Enabled.

♻️ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

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

---

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

---

This MR has been generated by Renovate Bot.