chore(deps): update actions/checkout digest to 93cb6ef

[elastic-renovate-prod]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	digest	08c6903 -> 93cb6ef

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[github-actions]

Hi!

We just realized that we haven't looked into this PR in a while. We're
sorry!

We're labeling this PR as Stale to make it hit our filters and
make sure we get back to it as soon as possible. In the meantime, it'd
be extremely helpful if you could take a look at it as well and confirm its
relevance. A simple comment with a nice emoji will be enough :+1.

Thank you for your contribution!