Update dependency renovate to ^21.28.3

This MR contains the following updates:

Package	Type	Update	Change
renovate (source)	dependencies	minor	^21.26.1 -> ^21.28.3

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

---

Release Notes

renovatebot/renovate

v21.28.3

Compare Source

21.28.3 (2020-07-12)

Bug Fixes

• github: Use GraphQL for initRepo (#​6726) (41983bf)

v21.28.2

Compare Source

21.28.2 (2020-07-12)

Bug Fixes

• github: Fix accept headers for Github HTTP wrapper (#​6736) (581844a)

Code Refactoring

• Rename GraphQL query methods (#​6732) (e2af296)

Miscellaneous Chores

• autoformat codeql-analysis.yml (ad60bc1)
• update issue templates (12be36f)

v21.28.1

Compare Source

21.28.1 (2020-07-11)

Miscellaneous Chores

• deps: update dependency re2 to v1.15.2 (#​6730) (ff0a503)
• add SECURITY.md (#​6731) (276cb3f)

Build System

• deps: update dependency lodash to v4.17.19 (#​6735) (b43a8d2)

v21.28.0

Compare Source

Features

• dependencyDashboard (#​6729) (a8f27e0)

Tests

• add codeql (13cbc87)

v21.27.0

Compare Source

Features

• nuget: look for refs within package.props schema (#​6703) (c98b6b2)

v21.26.2

Compare Source

21.26.2 (2020-07-11)

Bug Fixes

• github: don’t disable automerge on ghe if push protection enabled (9b8f010)

Code Refactoring

• internal: prepare for got v11 (#​6727) (e11875e)

Miscellaneous Chores

• fix lint (fb58be3)

---

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.