Update dependency @types/angular to v1.6.57

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@types/angular	devDependencies	patch	1.6.54 -> 1.6.57

---

Renovate configuration

:date: Schedule: "before 10am" in timezone Europe/Berlin.

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

:recycle: Rebasing: Whenever PR becomes conflicted, or if you tick the rebase/retry checkbox below.

:no_bell: 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 has been generated by WhiteSource Renovate. View repository job log here.