Bump actions/checkout from 2 to 3

[dependabot]

Bumps actions/checkout from 2 to 3.

Release notes

Sourced from actions/checkout's releases.

v3.0.0

• Updated to the node16 runtime by default
  • This requires a minimum Actions Runner version of v2.285.0 to run, which is by default available in GHES 3.4 or later.

v2.6.0

What's Changed

• Add backports to v2 branch by @​cory-miller in actions/checkout#1040
  • Includes backports from the following changes: actions/checkout#964, actions/checkout#1002, actions/checkout#1029
  • Upgraded the licensed version to match what is used in v3.

Full Changelog: actions/checkout@v2.5.0...v2.6.0

v2.5.0

What's Changed

• Update @​actions/core to 1.10.0 by @​rentziass in actions/checkout#962

Full Changelog: actions/checkout@v2...v2.5.0

v2.4.2

What's Changed

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

Full Changelog: actions/checkout@v2...v2.4.2

v2.4.1

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

v2.4.0

• Convert SSH URLs like org-<ORG_ID>@github.com: to https://github.com/ - pr

v2.3.5

Update dependencies

v2.3.4

• Add missing awaits
• Swap to Environment Files

v2.3.3

• Remove Unneeded commit information from build logs
• Add Licensed to verify third party dependencies

v2.3.2

Add Third Party License Information to Dist Files

v2.3.1

Fix default branch resolution for .wiki and when using SSH

... (truncated)

Changelog

Sourced from actions/checkout's changelog.

Changelog

v3.1.0

• Use @​actions/core saveState and getState
• Add github-server-url input

v3.0.2

• Add input set-safe-directory

v3.0.1

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

v3.0.0

• Update to node 16

v2.3.1

• Fix default branch resolution for .wiki and when using SSH

v2.3.0

• Fallback to the default branch

v2.2.0

• Fetch all history for all tags and branches when fetch-depth=0

v2.1.1

• Changes to support GHES (here and here)

v2.1.0

• Group output
• Changes to support GHES alpha release
• Persist core.sshCommand for submodules
• Add support ssh
• Convert submodule SSH URL to HTTPS, when not using SSH
• Add submodule support
• Follow proxy settings
• Fix ref for pr closed event when a pr is merged
• Fix issue checking detached when git less than 2.22

v2.0.0

• Do not pass cred on command line
• Add input persist-credentials
• Fallback to REST API to download repo

Commits

• ac59398 Fix comment typos (that got added in #770) (#1057)
• 3ba5ee6 Add in explicit reference to private checkout options (#1050)
• 8856415 Implement branch list using callbacks from exec function (#1045)
• 755da8c 3.2.0 (#1039)
• 26d48e8 Update @​actions/io to 1.1.2 (#1029)
• bf08527 wrap pipeline commands for submoduleForeach in quotes (#964)
• 5c3ccc2 Replace datadog/squid with ubuntu/squid Docker image (#1002)
• 1f9a0c2 README - fix status badge (#967)
• 8230315 Add workflow to update a main version (#942)
• 93ea575 Prepare release v3.1.0 (#940)
• Additional commits viewable in compare view

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[dependabot]

A newer version of actions/checkout exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.