Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/publish-docs.yml

@@ -21,10 +21,10 @@ jobs:
     steps:
       - name: Check out from release
         if: github.event_name == 'release'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check out from manual input
         if: github.event_name == 'workflow_dispatch'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ inputs.ref }}
       - uses: actions/setup-node@v3
@@ -34,7 +34,7 @@ jobs:
       - run: yarn install
       - run: yarn docs
       - name: Clone docs branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: docs-branch
           ref: oddleventy-docs

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     name: Sass
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v2
         with:
           node-version: 'lts/*'
@@ -20,7 +20,7 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v2
         with:
           node-version: 'lts/*'