Update actions/checkout action to v2.4.2

Created by: renovate[bot]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
actions/checkout	action	patch	v2.4.2	source

Test plan: CI should pass with updated dependencies. No review required: this is an automated dependency update PR.

Test plan: CI should pass with updated dependencies.

---

Release Notes

actions/checkout

v2.4.2

Compare Source

What's Changed

• Add set-safe-directory input to allow customers to take control. (#​770) by @​TingluoHuang in https://github.com/actions/checkout/pull/776
• Prepare changelog for v2.4.2. by @​TingluoHuang in https://github.com/actions/checkout/pull/778

Full Changelog: https://github.com/actions/checkout/compare/v2...v2.4.2

v2.4.1

Compare Source

• Fixed an issue where checkout failed to run in container jobs due to the new git setting safe.directory

---

Configuration

Schedule: Branch creation - "on the 1st through 7th day of the month" in timezone America/Los_Angeles, Automerge - At any time (no schedule defined).

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

Rebasing: Never, 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.