Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/R-CMD-check.yaml

@@ -27,7 +27,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GH_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-r@v2
         with:

.github/workflows/lint.yaml

@@ -13,7 +13,7 @@ jobs:
 
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-r@v2
 

.github/workflows/pkgdown.yaml

@@ -11,7 +11,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GH_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-r@v2
 

.github/workflows/pr-commands.yaml

@@ -10,7 +10,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GH_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: r-lib/actions/pr-fetch@v2
         with:
           repo-token: ${{ secrets.GH_TOKEN }}
@@ -35,7 +35,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GH_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: r-lib/actions/pr-fetch@v2
         with:
           repo-token: ${{ secrets.GH_TOKEN }}

.github/workflows/test-coverage.yaml

@@ -14,7 +14,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GH_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-r@v2