build(deps): bump actions/checkout from 3.5.3 to 4.1.2 (#1225)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.3 to 4.1.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@c85c95e...9bb5618)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     name: Check track configuration
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
         with:
           # main is needed in addition to HEAD, because the README check only
           # checks exercises changed since main. This fetches the entire repo's
@@ -65,7 +65,7 @@ jobs:
           # and an admin only needs to make "Check exercises (lts-from-exercises)" required.
           - lts-from-exercises
     steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
 
       - name: Install yq (for stack resolvers)
         run: |