Update dependency renovate to ^21.13.1

This MR contains the following updates:

Package	Type	Update	Change
renovate (source)	dependencies	minor	^21.12.7 -> ^21.13.1

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

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Release Notes

renovatebot/renovate

v21.13.1

Compare Source

21.13.1 (2020-06-19)

Bug Fixes

• datasource: better check for null releases lookups (7e51c90)

v21.13.0

Compare Source

Features

• internal: datasource registryStrategy (#​6549) (3d8e3ad)

Miscellaneous Chores

• reset cdnjs datasource exports and logs (78a1443)

Tests

• mock docker.defaultRegistryUrls (86b44db)

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This MR has been generated by Renovate Bot.