Update actions/checkout action

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	minor	v3.1.0 -> v3.6.0
actions/checkout	action	major	v2 -> v3
actions/checkout	action	minor	v3.3.0 -> v3.6.0

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Release Notes

actions/checkout (actions/checkout)

v3.6.0

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• Fix: Mark test scripts with Bash'isms to be run via Bash
• Add option to fetch tags even if fetch-depth > 0

v3.5.3

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• Fix: Checkout fail in self-hosted runners when faulty submodule are checked-in
• Fix typos found by codespell
• Add support for sparse checkouts

v3.5.2

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• Fix api endpoint for GHES

v3.5.1

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• Fix slow checkout on Windows

v3.5.0

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• Add new public key for known_hosts

v3.4.0

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• Upgrade codeql actions to v2
• Upgrade dependencies
• Upgrade @​actions/io

v3.3.0

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• Implement branch list using callbacks from exec function
• Add in explicit reference to private checkout options
• Fix comment typos (that got added in #​770)

v3.2.0

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• Add GitHub Action to perform release
• Fix status badge
• Replace datadog/squid with ubuntu/squid Docker image
• Wrap pipeline commands for submoduleForeach in quotes
• Update @​actions/io to 1.1.2
• Upgrading version to 3.2.0

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